diff --git a/project/.DS_Store b/project/.DS_Store
index af7cc67..0f5e8c2 100644
Binary files a/project/.DS_Store and b/project/.DS_Store differ
diff --git a/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldObject;1 b/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldObject;1
index adc3f40..411259e 100644
--- a/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldObject;1
+++ b/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldObject;1
@@ -9,6 +9,10 @@ O1;net.drinkingtea.ox.TypeDescriptor;1;{
 			"fieldName" : "name",
 			"typeId" : "net.drinkingtea.ox.BasicString#8#;1"
 		},
+		{
+			"fieldName" : "intervalMs",
+			"typeId" : "B.uint16;0"
+		},
 		{
 			"fieldName" : "pal_bank",
 			"typeId" : "B.uint16;0"
diff --git a/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldObjectSet;1 b/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldObjectSet;1
index ec51374..5568091 100644
--- a/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldObjectSet;1
+++ b/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldObjectSet;1
@@ -18,7 +18,7 @@ O1;net.drinkingtea.ox.TypeDescriptor;1;{
 					"subscriptType" : 4
 				}
 			],
-			"typeId" : "net.drinkingtea.jasper.world.PaletteCycle;1"
+			"typeId" : "net.drinkingtea.ox.FileAddress;1"
 		},
 		{
 			"fieldName" : "objects",
diff --git a/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldStatic;1 b/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldStatic;1
index 3a73fd9..db9ceef 100644
--- a/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldStatic;1
+++ b/project/.jasper/type_descriptors/net.drinkingtea.jasper.world.WorldStatic;1
@@ -14,7 +14,7 @@ O1;net.drinkingtea.ox.TypeDescriptor;1;{
 					"subscriptType" : 4
 				}
 			],
-			"typeId" : "net.drinkingtea.jasper.world.PaletteCycle;1"
+			"typeId" : "net.drinkingtea.ox.FileAddress;1"
 		},
 		{
 			"fieldName" : "columns",
diff --git a/project/Palettes/Terrain.npal b/project/Palettes/Terrain.npal
index 1db4c24..1bc127f 100644
Binary files a/project/Palettes/Terrain.npal and b/project/Palettes/Terrain.npal differ
diff --git a/project/TileSheets/Terrain.ng b/project/TileSheets/Terrain.ng
index 7b5e6ac..081a35c 100644
Binary files a/project/TileSheets/Terrain.ng and b/project/TileSheets/Terrain.ng differ
diff --git a/project/WorldObjectSets/TerrainObjects.jwob b/project/WorldObjectSets/TerrainObjects.jwob
index 0e952d8..63da9c9 100644
Binary files a/project/WorldObjectSets/TerrainObjects.jwob and b/project/WorldObjectSets/TerrainObjects.jwob differ
diff --git a/src/jasper/modules/world/include/jasper/world/objectcache.hpp b/src/jasper/modules/world/include/jasper/world/objectcache.hpp
index 0bb9423..05a1ce8 100644
--- a/src/jasper/modules/world/include/jasper/world/objectcache.hpp
+++ b/src/jasper/modules/world/include/jasper/world/objectcache.hpp
@@ -26,7 +26,7 @@ class ObjectCache {
 			ox::Vector<Obj> objects;
 		};
 		ox::Vector<ox::FileAddress> m_tilesheets;
-		ox::Vector<PaletteCycle> m_palettes;
+		ox::Vector<ox::FileAddress> m_palettes;
 		size_t m_tileIdx{};
 		size_t m_palBank{};
 		ox::Vector<ObjSet> m_objSets;
@@ -42,7 +42,7 @@ class ObjectCache {
 		[[nodiscard]]
 		ncore::TileSheetSet const&tilesheets() const noexcept;
 		[[nodiscard]]
-		ox::Vector<PaletteCycle> const&palettes() const noexcept;
+		ox::Vector<ox::FileAddress> const&palettes() const noexcept;
 	private:
 		void addTileSheet(ox::FileAddress path, int32_t tiles) noexcept;
 };
diff --git a/src/jasper/modules/world/include/jasper/world/world.hpp b/src/jasper/modules/world/include/jasper/world/world.hpp
index 4fd59f6..09f879d 100644
--- a/src/jasper/modules/world/include/jasper/world/world.hpp
+++ b/src/jasper/modules/world/include/jasper/world/world.hpp
@@ -16,15 +16,10 @@ namespace ncore = nostalgia::core;
 
 class World {
 	private:
-		struct PaletteTracker {
-			keel::AssetRef<ncore::CompactPalette> pal;
-			int page{};
-		};
-		ox::Vector<PaletteTracker, 10> m_palettes;
 		ncore::Context &m_nctx;
 		WorldStatic const&m_worldStatic;
 #ifndef OX_OS_BareMetal
-		turbine::TimeMs m_prevUpdateTime{};
+		//turbine::TimeMs m_prevUpdateTime{};
 		turbine::TimeMs m_nextUpdateTime{};
 #endif
 
diff --git a/src/jasper/modules/world/include/jasper/world/worldobject.hpp b/src/jasper/modules/world/include/jasper/world/worldobject.hpp
index 0148d02..4b3e8eb 100644
--- a/src/jasper/modules/world/include/jasper/world/worldobject.hpp
+++ b/src/jasper/modules/world/include/jasper/world/worldobject.hpp
@@ -13,19 +13,6 @@ namespace jasper::world {
 
 namespace ncore = nostalgia::core;
 
-struct PaletteCycle {
-	static constexpr auto TypeName = "net.drinkingtea.jasper.world.PaletteCycle";
-	static constexpr auto TypeVersion = 1;
-	ox::FileAddress palette;
-	uint16_t intervalMs = 1000;
-};
-
-oxModelBegin(PaletteCycle)
-	oxModelField(palette)
-	oxModelField(intervalMs)
-oxModelEnd()
-
-
 using CollisionMap = uint32_t;
 
 enum class ObjectType: uint8_t {
@@ -42,6 +29,7 @@ struct WorldObject {
 	static constexpr auto TypeVersion = 1;
 	ObjectId id{};
 	ox::String name;
+	uint16_t intervalMs{};
 	uint16_t palBank{};
 	ncore::SubSheetId subsheetId{};
 	CollisionMap collisionMap{};
@@ -54,6 +42,7 @@ struct WorldObject {
 oxModelBegin(WorldObject)
 	oxModelField(id)
 	oxModelField(name)
+	oxModelFieldRename(intervalMs, interval_ms)
 	oxModelFieldRename(palBank, pal_bank)
 	oxModelFieldRename(subsheetId, subsheet_id)
 	oxModelFieldRename(collisionMap, collision_map)
@@ -80,7 +69,7 @@ struct WorldObjectSet {
 	// index used to assign unique IDs to objects in the set
 	ObjectId objIdIdx = 0;
 	ox::FileAddress tilesheet;
-	ox::Vector<PaletteCycle> palettes;
+	ox::Vector<ox::FileAddress> palettes;
 	ox::Vector<WorldObject> objects;
 };
 
diff --git a/src/jasper/modules/world/include/jasper/world/worldstatic.hpp b/src/jasper/modules/world/include/jasper/world/worldstatic.hpp
index 8ac6e66..40ffdf6 100644
--- a/src/jasper/modules/world/include/jasper/world/worldstatic.hpp
+++ b/src/jasper/modules/world/include/jasper/world/worldstatic.hpp
@@ -91,7 +91,7 @@ struct WorldStatic {
 	constexpr static auto TypeVersion = 1;
 	constexpr static auto Preloadable = true;
 	ncore::TileSheetSet tilesheets;
-	ox::Vector<PaletteCycle> palettes;
+	ox::Vector<ox::FileAddress> palettes;
 	int16_t columns{};
 	int16_t rows{};
 	ox::Array<BgLayer, 3> map;
diff --git a/src/jasper/modules/world/src/keel/keelmodule.cpp b/src/jasper/modules/world/src/keel/keelmodule.cpp
index f76c46f..eb9e1e8 100644
--- a/src/jasper/modules/world/src/keel/keelmodule.cpp
+++ b/src/jasper/modules/world/src/keel/keelmodule.cpp
@@ -24,7 +24,6 @@ static class: public keel::Module {
 		[[nodiscard]]
 		ox::Vector<keel::TypeDescGenerator> types() const noexcept override {
 			return {
-				keel::generateTypeDesc<PaletteCycle>,
 				keel::generateTypeDesc<WorldObjectSet>,
 				keel::generateTypeDesc<WorldDoc>,
 				keel::generateTypeDesc<WorldStatic>,
diff --git a/src/jasper/modules/world/src/objectcache.cpp b/src/jasper/modules/world/src/objectcache.cpp
index 01ec54a..17b6532 100644
--- a/src/jasper/modules/world/src/objectcache.cpp
+++ b/src/jasper/modules/world/src/objectcache.cpp
@@ -41,7 +41,7 @@ ox::Error ObjectCache::indexSet(
 	addTileSheet(objSet.tilesheet, static_cast<int32_t>(tileCnt));
 	for (auto const&pal : objSet.palettes) {
 		m_palettes.emplace_back(pal);
-		oxRequire(p, readObj<ncore::Palette>(kctx, pal.palette));
+		oxRequire(p, readObj<ncore::Palette>(kctx, pal));
 		m_palBank += largestPage(*p);
 	}
 	return {};
@@ -65,7 +65,7 @@ ncore::TileSheetSet const&ObjectCache::tilesheets() const noexcept {
 	return m_tilesheetSet;
 }
 
-ox::Vector<PaletteCycle> const&ObjectCache::palettes() const noexcept {
+ox::Vector<ox::FileAddress> const&ObjectCache::palettes() const noexcept {
 	return m_palettes;
 }
 
diff --git a/src/jasper/modules/world/src/studio/worldeditor/worldeditor-imgui.cpp b/src/jasper/modules/world/src/studio/worldeditor/worldeditor-imgui.cpp
index 7906dce..e2a37bb 100644
--- a/src/jasper/modules/world/src/studio/worldeditor/worldeditor-imgui.cpp
+++ b/src/jasper/modules/world/src/studio/worldeditor/worldeditor-imgui.cpp
@@ -431,7 +431,7 @@ ox::Error WorldEditorImGui::loadObjectSets() noexcept {
 		oxRequireM(os, readObj<WorldObjectSet>(kctx, set.path));
 		oxLogError(addDependency(os->tilesheet));
 		for (auto const&pal : os->palettes) {
-			oxLogError(addDependency(pal.palette));
+			oxLogError(addDependency(pal));
 		}
 		m_objSets.emplace_back(ox::String(set.path), set.id, std::move(os));
 	}
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/CMakeLists.txt b/src/jasper/modules/world/src/studio/worldobjectseteditor/CMakeLists.txt
index 51945f2..141a2e7 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/CMakeLists.txt
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/CMakeLists.txt
@@ -5,7 +5,6 @@ target_sources(
 		commands/editobject.cpp
 		commands/addpalette.cpp
 		commands/rmpalette.cpp
-		commands/editpalette.cpp
 		commands/changetilesheet.cpp
 		collisionmapview.cpp
         worldobjectseteditor-imgui.cpp
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/addpalette.cpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/addpalette.cpp
index a9277c0..7ce03a5 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/addpalette.cpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/addpalette.cpp
@@ -15,19 +15,19 @@ AddPalette::AddPalette(WorldObjectSet &doc, ox::FileAddress palAddr) noexcept:
 }
 
 ox::Error AddPalette::redo() noexcept {
-	m_doc.palettes.emplace_back(PaletteCycle{
-		.palette = m_palAddr
-	});
-	std::sort(m_doc.palettes.begin(), m_doc.palettes.end(), [](PaletteCycle const&a, PaletteCycle const&b) {
-		return a.palette.getPath().or_value("") < b.palette.getPath().or_value("");
-	});
+	m_doc.palettes.emplace_back(m_palAddr);
+	std::sort(m_doc.palettes.begin(), m_doc.palettes.end(),
+		[](ox::FileAddress const&a, ox::FileAddress const&b) {
+			return a.getPath().or_value("") < b.getPath().or_value("");
+		});
 	return {};
 }
 
 ox::Error AddPalette::undo() noexcept {
-	auto const idx = std::find_if(m_doc.palettes.begin(), m_doc.palettes.end(), [this](PaletteCycle const&v) {
-		return v.palette == m_palAddr;
-	});
+	auto const idx = std::find_if(m_doc.palettes.begin(), m_doc.palettes.end(),
+		[this](ox::FileAddress const&v) {
+			return v == m_palAddr;
+		});
 	return m_doc.palettes.erase(idx).error;
 }
 
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/commands.hpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/commands.hpp
index 9daadb2..34adab4 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/commands.hpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/commands.hpp
@@ -11,12 +11,12 @@ enum class WorldObjCommand {
 	AddObject,
 	RmObject,
 	EditObjectName,
+	EditObjectInterval,
 	EditObjectPalette,
 	EditObjectSubSheet,
 	EditObjectCollisionMap,
 	AddPalette,
 	RmPalette,
-	EditPalette,
 	ChangeTileSheet,
 };
 
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.cpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.cpp
index e140601..20dc822 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.cpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.cpp
@@ -43,6 +43,38 @@ bool EditObjectName::mergeWith(UndoCommand const&cmd) noexcept {
 }
 
 
+EditObjectInterval::EditObjectInterval(WorldObjectSet &doc, size_t objIdx, uint16_t newInterval) noexcept:
+		m_doc(doc),
+		m_objIdx(objIdx),
+		m_oldVal(m_doc.objects[objIdx].intervalMs),
+		m_newVal(newInterval) {}
+
+ox::Error EditObjectInterval::redo() noexcept {
+	auto &obj = m_doc.objects[m_objIdx];
+	obj.intervalMs = m_newVal;
+	return {};
+}
+
+ox::Error EditObjectInterval::undo() noexcept {
+	auto &obj = m_doc.objects[m_objIdx];
+	obj.intervalMs = m_oldVal;
+	return {};
+}
+
+int EditObjectInterval::commandId() const noexcept {
+	return static_cast<int>(WorldObjCommand::EditObjectInterval);
+}
+
+bool EditObjectInterval::mergeWith(UndoCommand const&cmd) noexcept {
+	auto const en = dynamic_cast<EditObjectInterval const*>(&cmd);
+	if (en && m_objIdx == en->m_objIdx) {
+		m_newVal = en->m_newVal;
+		return true;
+	}
+	return false;
+}
+
+
 EditObjectSubSheet::EditObjectSubSheet(
 		WorldObjectSet &doc,
 		size_t objIdx,
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.hpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.hpp
index 76db776..b659580 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.hpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.hpp
@@ -27,6 +27,21 @@ class EditObjectName: public studio::UndoCommand {
 		bool mergeWith(UndoCommand const&cmd) noexcept override;
 };
 
+class EditObjectInterval: public studio::UndoCommand {
+	private:
+		WorldObjectSet &m_doc;
+		size_t const m_objIdx{};
+		uint16_t const m_oldVal{};
+		uint16_t m_newVal{};
+	public:
+		EditObjectInterval(WorldObjectSet &doc, size_t objIdx, uint16_t newName) noexcept;
+		ox::Error redo() noexcept override;
+		ox::Error undo() noexcept override;
+		[[nodiscard]]
+		int commandId() const noexcept override;
+		bool mergeWith(UndoCommand const&cmd) noexcept override;
+};
+
 class EditObjectSubSheet: public studio::UndoCommand {
 	private:
 		WorldObjectSet &m_doc;
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editpalette.cpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editpalette.cpp
deleted file mode 100644
index 2a7c3b3..0000000
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editpalette.cpp
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright 2023 - 2024 Gary Talent (gary@drinkingtea.net). All rights reserved.
- */
-
-#include "commands.hpp"
-#include "editpalette.hpp"
-
-namespace jasper::world {
-
-EditPalette::EditPalette(PaletteCycle &doc, uint16_t interval) noexcept:
-		m_doc(doc),
-		m_oldVal(doc.intervalMs),
-		m_newVal(interval) {
-}
-
-ox::Error EditPalette::redo() noexcept {
-	m_doc.intervalMs = m_newVal;
-	return {};
-}
-
-ox::Error EditPalette::undo() noexcept {
-	m_doc.intervalMs = m_oldVal;
-	return {};
-}
-
-int EditPalette::commandId() const noexcept {
-	return static_cast<int>(WorldObjCommand::EditPalette);
-}
-
-}
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editpalette.hpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editpalette.hpp
deleted file mode 100644
index abf7154..0000000
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editpalette.hpp
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright 2023 - 2024 Gary Talent (gary@drinkingtea.net). All rights reserved.
- */
-
-#pragma once
-
-#include <ox/fs/fs.hpp>
-
-#include <studio/undostack.hpp>
-
-#include <jasper/world/worldobject.hpp>
-
-namespace jasper::world {
-
-class EditPalette: public studio::UndoCommand {
-	private:
-		PaletteCycle &m_doc;
-		uint16_t const m_oldVal{};
-		uint16_t const m_newVal{};
-	public:
-		EditPalette(PaletteCycle &doc, uint16_t interval) noexcept;
-		ox::Error redo() noexcept override;
-		ox::Error undo() noexcept override;
-		[[nodiscard]]
-		int commandId() const noexcept override;
-};
-
-}
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/rmpalette.cpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/rmpalette.cpp
index 71112a0..f6f583e 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/rmpalette.cpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/rmpalette.cpp
@@ -22,9 +22,10 @@ ox::Error RmPalette::redo() noexcept {
 
 ox::Error RmPalette::undo() noexcept {
 	m_doc.palettes.emplace_back(std::move(m_pal));
-	std::sort(m_doc.palettes.begin(), m_doc.palettes.end(), [](PaletteCycle const&a, PaletteCycle const&b) {
-		return a.palette.getPath().or_value("") < b.palette.getPath().or_value("");
-	});
+	std::sort(m_doc.palettes.begin(), m_doc.palettes.end(),
+		[](ox::FileAddress const&a, ox::FileAddress const&b) {
+			return a.getPath().or_value("") < b.getPath().or_value("");
+		});
 	return {};
 }
 
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/rmpalette.hpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/rmpalette.hpp
index f58de9f..b62a15a 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/rmpalette.hpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/rmpalette.hpp
@@ -15,7 +15,7 @@ namespace jasper::world {
 class RmPalette: public studio::UndoCommand {
 	private:
 		WorldObjectSet &m_doc;
-		PaletteCycle m_pal;
+		ox::FileAddress m_pal;
 		size_t const m_rmIdx = 0;
 	public:
 		RmPalette(WorldObjectSet &doc, size_t rmIdx) noexcept;
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp
index a31e7e8..5246ba0 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp
@@ -9,7 +9,6 @@
 #include "commands/editobject.hpp"
 #include "commands/addpalette.hpp"
 #include "commands/rmpalette.hpp"
-#include "commands/editpalette.hpp"
 #include "commands/changetilesheet.hpp"
 
 #include "worldobjectseteditor-imgui.hpp"
@@ -26,12 +25,12 @@ WorldObjectSetEditorImGui::WorldObjectSetEditorImGui(
 	Editor(path),
 	m_sctx(ctx),
 	m_itemPath(path),
-	m_doc(*readObj<WorldObjectSet>(keelCtx(ctx.tctx), path).unwrapThrow()),
-	m_tileSheet(readObj<ncore::TileSheet>(keelCtx(m_sctx.tctx), m_doc.tilesheet).unwrapThrow()) {
+	m_doc(*readObj<WorldObjectSet>(keelCtx(m_sctx), path).unwrapThrow()),
+	m_tileSheet(readObj<ncore::TileSheet>(keelCtx(m_sctx), m_doc.tilesheet).unwrapThrow()) {
 	auto const&tilesheetList = m_sctx.project->fileList(ncore::FileExt_ng);
-	auto &kctx = keelCtx(m_sctx.tctx);
+	auto &kctx = keelCtx(m_sctx);
 	auto const [tsPath, err] = getPath(kctx, m_doc.tilesheet);
-	if (err) {
+	if (!err) {
 		m_selectedTilesheetIdx = std::find(tilesheetList.begin(), tilesheetList.end(), tsPath).offset();
 	}
 	loadObj();
@@ -67,7 +66,6 @@ void WorldObjectSetEditorImGui::draw(studio::StudioContext&) noexcept {
 	}
 	ImGui::EndChild();
 	drawAddPalettePopup();
-	drawEditPalettePopup();
 }
 
 void WorldObjectSetEditorImGui::onActivated() noexcept {
@@ -84,8 +82,8 @@ WorldObject &WorldObjectSetEditorImGui::activeObj() noexcept {
 void WorldObjectSetEditorImGui::buildPaletteDisplayNameList() noexcept {
 	m_paletteDisplayNames.clear();
 	for (auto i = 1u; auto const&pal : m_doc.palettes) {
-		auto const path = keel::getPath(keelCtx(m_sctx.tctx), pal.palette).or_value("Invalid path");
-		m_paletteDisplayNames.emplace_back(ox::sfmt("{}: {} - {} ms", i, path, pal.intervalMs));
+		auto const path = keel::getPath(keelCtx(m_sctx.tctx), pal).or_value("Invalid path");
+		m_paletteDisplayNames.emplace_back(ox::sfmt("{}: {}", i, path));
 		++i;
 	}
 }
@@ -95,11 +93,11 @@ void WorldObjectSetEditorImGui::drawTileSheetSelector() noexcept {
 	auto sel = m_selectedTilesheetIdx;
 	if (ig::ComboBox("Tile Sheet", tilesheetList, sel)) {
 		auto const [uuid, err] = keel::pathToUuid(
-				keelCtx(m_sctx.tctx), tilesheetList[m_addPalPopup.selectedIdx]);
+				keelCtx(m_sctx.tctx), tilesheetList[sel]);
 		if (!err) {
 			auto const uuidUrl = ox::sfmt("uuid://{}", uuid.toString());
-			std::ignore = undoStack()->push(ox::make_unique<ChangeTileSheet>
-					(m_doc, ox::FileAddress(uuidUrl), sel, m_selectedTilesheetIdx));
+			std::ignore = pushCommand<ChangeTileSheet>
+					(m_doc, ox::FileAddress(uuidUrl), sel, m_selectedTilesheetIdx);
 			loadObj();
 		}
 	}
@@ -115,7 +113,7 @@ void WorldObjectSetEditorImGui::drawObjSelector() noexcept {
 	}
 	ImGui::SameLine();
 	if (ig::PushButton("-", btnSize)) {
-		std::ignore = undoStack()->push(ox::make_unique<RmObject>(m_doc, m_selectedObj));
+		std::ignore = pushCommand<RmObject>(m_doc, m_selectedObj);
 	}
 	if (ig::ListBox("Objects", [this](size_t i) -> ox::CStringView {
 			return m_doc.objects[i].name;
@@ -132,6 +130,7 @@ void WorldObjectSetEditorImGui::loadObj() noexcept {
 	auto &nameBuff = m_objEditor.nameBuff;
 	ox::strncpy(nameBuff.data(), obj.name.data(), nameBuff.size());
 	m_objEditor.palette = obj.palBank;
+	m_objEditor.interval = obj.intervalMs;
 	m_subsheet = getSubsheet(*m_tileSheet, obj.subsheetId);
 	int w = 0;
 	int h = 0;
@@ -142,7 +141,7 @@ void WorldObjectSetEditorImGui::loadObj() noexcept {
 	auto const idx = getTileIdx(*m_tileSheet, obj.subsheetId);
 	oxLogError(m_colView.setup(
 			m_doc.tilesheet,
-			m_doc.palettes[obj.palBank].palette,
+			m_doc.palettes[obj.palBank],
 			w,
 			h,
 			static_cast<uint_t>(idx),
@@ -164,17 +163,22 @@ void WorldObjectSetEditorImGui::drawObjEditor() noexcept {
 	ImGui::NewLine();
 	auto &nameBuff = m_objEditor.nameBuff;
 	if (ImGui::InputText("Name", nameBuff.data(), nameBuff.size())) {
-		std::ignore = undoStack()->push(ox::make_unique<EditObjectName>(
+		std::ignore = pushCommand<EditObjectName>(
 				m_doc,
 				m_selectedObj,
-				ox::String(nameBuff.data(), ox::strnlen(nameBuff.data(), nameBuff.size()))));
+				ox::String(nameBuff.data(), ox::strnlen(nameBuff.data(), nameBuff.size())));
 	}
 	// SubSheet Selector
 	{
 		ig::IDStackItem const subsheetSelectorStackItem("SubsheetSelector");
 		if (ig::ComboBox("Palette", m_paletteDisplayNames, m_objEditor.palette)) {
-			std::ignore = undoStack()->push(ox::make_unique<EditObjectPalette>(
-					m_doc, m_selectedObj, static_cast<uint16_t>(m_objEditor.palette)));
+			std::ignore = pushCommand<EditObjectPalette>(
+					m_doc, m_selectedObj, static_cast<uint16_t>(m_objEditor.palette));
+		}
+		if (ImGui::InputInt("Interval (ms)", &m_objEditor.interval, 50, 1000)) {
+			m_objEditor.interval = ox::clamp(m_objEditor.interval, 50, 65535);
+			std::ignore = pushCommand<EditObjectInterval>(
+					m_doc, m_selectedObj, static_cast<uint16_t>(m_objEditor.interval));
 		}
 		ImGui::Separator();
 		ImGui::Text("Subsheet:");
@@ -213,8 +217,7 @@ void WorldObjectSetEditorImGui::drawObjEditor() noexcept {
 			auto &obj = activeObj();
 			auto intermediate = obj.collisionMap;
 			if (m_colView.click(mousePos, intermediate)) {
-				std::ignore = undoStack()->push(ox::make_unique<EditObjectCollisionMap>(
-						m_doc, m_selectedObj, intermediate));
+				std::ignore = pushCommand<EditObjectCollisionMap>(m_doc, m_selectedObj, intermediate);
 			}
 		}
 	}
@@ -234,7 +237,7 @@ void WorldObjectSetEditorImGui::drawSubSheetNode(ncore::TileSheet::SubSheet cons
 		}
 	} else if (ImGui::TreeNodeEx(ss.name.c_str(), ImGuiTreeNodeFlags_Leaf | selected)) {
 		if (ImGui::IsItemClicked()) {
-			std::ignore = undoStack()->push(ox::make_unique<EditObjectSubSheet>(m_doc, m_selectedObj, ss.id));
+			std::ignore = pushCommand<EditObjectSubSheet>(m_doc, m_selectedObj, ss.id);
 		}
 		ImGui::TreePop();
 	}
@@ -249,14 +252,9 @@ void WorldObjectSetEditorImGui::drawPaletteList() noexcept {
 	if (ig::PushButton("-", btnSize)) {
 		rmPalette();
 	}
-	ImGui::SameLine();
-	if (ig::PushButton("Edit")) {
-		editPalette();
-	}
 	constexpr auto flags = ImGuiTableFlags_RowBg | ImGuiTableFlags_NoBordersInBody;
-	if (ImGui::BeginTable("Subsheets", 2, flags)) {
+	if (ImGui::BeginTable("Subsheets", 1, flags)) {
 		ImGui::TableSetupColumn("Palette", ImGuiTableColumnFlags_NoHide);
-		ImGui::TableSetupColumn("Interval", ImGuiTableColumnFlags_WidthFixed, 100);
 		ImGui::TableHeadersRow();
 		drawPaletteListItems();
 		ImGui::EndTable();
@@ -269,17 +267,12 @@ void WorldObjectSetEditorImGui::drawPaletteListItems() noexcept {
 		ImGui::TableNextRow();
 		ImGui::TableNextColumn();
 		auto const path
-			= keel::getPath(keelCtx(m_sctx.tctx), pal.palette).or_value("Invalid path");
+			= keel::getPath(keelCtx(m_sctx.tctx), pal).or_value("Invalid path");
 		ImGui::Text("%s", path.c_str());
-		ImGui::TableNextColumn();
-		ImGui::Text("%d ms", pal.intervalMs);
 		ImGui::SameLine();
 		if (ImGui::Selectable("##PaletteSelection", i == m_selectedPal, ImGuiSelectableFlags_SpanAllColumns)) {
 			m_selectedPal = i;
 		}
-		if (ImGui::IsMouseDoubleClicked(0) && ImGui::IsItemHovered()) {
-			editPalette();
-		}
 		++i;
 	}
 }
@@ -299,48 +292,20 @@ void WorldObjectSetEditorImGui::drawAddPalettePopup() noexcept {
 					keelCtx(m_sctx.tctx), palettes[m_addPalPopup.selectedIdx]);
 			if (!err) {
 				auto const uuidUrl = ox::sfmt("uuid://{}", uuid.toString());
-				std::ignore = undoStack()->push(ox::make_unique<AddPalette>(
-						m_doc, ox::FileAddress(uuidUrl)));
+				std::ignore = pushCommand<AddPalette>(m_doc, ox::FileAddress(uuidUrl));
 			}
 		}
 		ImGui::EndPopup();
 	}
 }
 
-void WorldObjectSetEditorImGui::drawEditPalettePopup() noexcept {
-	if (!m_editPalPopup.show) {
-		return;
-	}
-	auto constexpr popupName = ox::CStringView("Edit Palette");
-	auto constexpr popupSz = ImVec2{300.f, 0};
-	ig::IDStackItem const idStackItem("EditPalette");
-	if (ig::BeginPopup(m_sctx.tctx, popupName, m_editPalPopup.show, popupSz)) {
-		auto &pal = m_doc.palettes[m_selectedPal];
-		ImGui::InputInt("Interval (ms)", &m_editPalPopup.intervalInputVal, 1000);
-		m_editPalPopup.intervalInputVal =
-				static_cast<uint16_t>(ox::clamp(m_editPalPopup.intervalInputVal, 0, 60000));
-		if (ig::PopupControlsOkCancel(popupSz.x, m_editPalPopup.show) == ig::PopupResponse::OK) {
-			std::ignore = undoStack()->push(ox::make_unique<EditPalette>(
-					pal, static_cast<uint16_t>(m_editPalPopup.intervalInputVal)));
-		}
-		ImGui::EndPopup();
-	}
-}
-
 void WorldObjectSetEditorImGui::addPalette() noexcept {
 	m_addPalPopup.show = true;
 	m_addPalPopup.selectedIdx = 0;
 }
 
 void WorldObjectSetEditorImGui::rmPalette() noexcept {
-	std::ignore = undoStack()->push(ox::make_unique<RmPalette>(
-			m_doc, m_selectedPal));
-}
-
-void WorldObjectSetEditorImGui::editPalette() noexcept {
-	auto &pal = m_doc.palettes[m_selectedPal];
-	m_editPalPopup.show = true;
-	m_editPalPopup.intervalInputVal = pal.intervalMs;
+	std::ignore = pushCommand<RmPalette>(m_doc, m_selectedPal);
 }
 
 ox::Error WorldObjectSetEditorImGui::handleCmd(studio::UndoCommand const*cmd) noexcept {
@@ -349,8 +314,7 @@ ox::Error WorldObjectSetEditorImGui::handleCmd(studio::UndoCommand const*cmd) no
 		oxLogError(readObj<ncore::TileSheet>(kctx, m_doc.tilesheet).moveTo(m_tileSheet));
 	} else if (
 		dynamic_cast<AddPalette const*>(cmd) ||
-	    dynamic_cast<RmPalette const*>(cmd) ||
-		dynamic_cast<EditPalette const*>(cmd)) {
+	    dynamic_cast<RmPalette const*>(cmd)) {
 		buildPaletteDisplayNameList();
 	} else if (dynamic_cast<EditObjectPalette const*>(cmd)) {
 		auto const&obj = activeObj();
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.hpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.hpp
index c6eab01..4bd74c1 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.hpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.hpp
@@ -29,13 +29,10 @@ class WorldObjectSetEditorImGui: public studio::Editor {
 			bool show{};
 			size_t selectedIdx{};
 		} m_addPalPopup;
-		struct {
-			bool show{};
-			int intervalInputVal{};
-		} m_editPalPopup;
 		CollisionView m_colView{m_sctx};
 		struct {
 			ox::Buffer nameBuff = ox::Buffer(256);
+			int interval{};
 			size_t palette{};
 		} m_objEditor;
 
@@ -69,14 +66,10 @@ class WorldObjectSetEditorImGui: public studio::Editor {
 
 		void drawAddPalettePopup() noexcept;
 
-		void drawEditPalettePopup() noexcept;
-
 		void addPalette() noexcept;
 
 		void rmPalette() noexcept;
 
-		void editPalette() noexcept;
-
 		ox::Error handleCmd(studio::UndoCommand const*cmd) noexcept;
 
 		ox::Error saveItem() noexcept final;
diff --git a/src/jasper/modules/world/src/world.cpp b/src/jasper/modules/world/src/world.cpp
index 16ed7b3..3b19f09 100644
--- a/src/jasper/modules/world/src/world.cpp
+++ b/src/jasper/modules/world/src/world.cpp
@@ -18,11 +18,9 @@ ox::Error World::setupDisplay() noexcept {
 	if (m_worldStatic.palettes.empty()) {
 		return OxError(1, "World has no palettes");
 	}
-	m_palettes.clear();
-	for (auto i = 0u; auto const&pal : m_worldStatic.palettes) {
-		auto &palRef = m_palettes.emplace_back();
-		oxReturnError(readObj<ncore::CompactPalette>(keelCtx(m_nctx), pal.palette).moveTo(palRef.pal));
-		oxReturnError(ncore::loadBgPalette(m_nctx, i, *palRef.pal));
+	for (auto i = 0u; auto const&palAddr : m_worldStatic.palettes) {
+		oxRequire(pal, readObj<ncore::CompactPalette>(keelCtx(m_nctx), palAddr));
+		oxReturnError(ncore::loadBgPalette(m_nctx, i, *pal));
 		++i;
 	}
 	oxReturnError(ncore::loadBgTileSheet(m_nctx, 0, m_worldStatic.tilesheets));
@@ -68,15 +66,7 @@ void World::setupLayer(
 }
 
 ox::Result<int> World::update() noexcept {
-	auto const time = ticksMs(turbineCtx(m_nctx));
 	int expiresIn = 60'000;
-	for (size_t i = 0; auto const&pal : m_palettes) {
-		auto const interval = m_worldStatic.palettes[i].intervalMs;
-		auto const page = (time / interval) % pal.pal->pages.size();
-		expiresIn = ox::min(expiresIn, static_cast<int>(time % interval));
-		oxReturnError(ncore::loadBgPalette(m_nctx, i, *pal.pal, static_cast<size_t>(page)));
-		++i;
-	}
 	return expiresIn;
 }
 
@@ -85,22 +75,6 @@ ox::Result<int> World::editorModeUpdate() noexcept {
 	auto const time = ticksMs(turbineCtx(m_nctx));
 	if (time >= m_nextUpdateTime) {
 		turbine::TimeMs expiresIn = 60'000;
-		bool updated = false;
-		auto const elapsedSincePrev = time - m_prevUpdateTime;
-		for (size_t i = 0; auto &pal: m_palettes) {
-			auto const interval = m_worldStatic.palettes[i].intervalMs;
-			auto &page = pal.page;
-			auto const update = (elapsedSincePrev >= interval);
-			page += update * 1;
-			page %= static_cast<int>(pal.pal->pages.size());
-			oxReturnError(ncore::loadBgPalette(m_nctx, i, *pal.pal, static_cast<size_t>(page)));
-			updated = updated || update;
-			expiresIn = ox::min<turbine::TimeMs>(expiresIn, interval);
-			++i;
-		}
-		if (updated) {
-			m_prevUpdateTime = time;
-		}
 		m_nextUpdateTime = time + expiresIn;
 	}
 	return static_cast<int>(m_nextUpdateTime - time);