diff --git a/src/jasper/modules/world/include/jasper/world/world.hpp b/src/jasper/modules/world/include/jasper/world/world.hpp
index be60892..e9aaef5 100644
--- a/src/jasper/modules/world/include/jasper/world/world.hpp
+++ b/src/jasper/modules/world/include/jasper/world/world.hpp
@@ -14,13 +14,16 @@ namespace ncore = nostalgia::core;
 
 class World {
 	private:
+		struct ObjState {
+			uint16_t objIdx{};
+			uint16_t frame{};
+			turbine::TimeMs nextUpdateTime{};
+		};
 		ncore::Context &m_nctx;
 		WorldStatic const&m_worldStatic;
 		ox::Vector<keel::AssetRef<ncore::CompactTileSheet>, 32> m_tilesheets;
-#ifndef OX_OS_BareMetal
-		//turbine::TimeMs m_prevUpdateTime{};
-		turbine::TimeMs m_nextUpdateTime{};
-#endif
+		ox::Vector<ObjState, 128> m_objStates;
+		turbine::TimeMs m_currentTicks{};
 
 	public:
 		explicit World(ncore::Context &nctx, WorldStatic const&worldStatic) noexcept;
@@ -29,16 +32,14 @@ class World {
 
 		ox::Result<int> update() noexcept;
 
-#ifndef OX_OS_BareMetal
-		ox::Result<int> editorModeUpdate() noexcept;
-#endif
-
 		void setupTiles() noexcept;
 
-		void setupTile(uint32_t lyr, uint32_t x, uint32_t y) const noexcept;
+		void setupTile(uint32_t lyr, uint32_t x, uint32_t y) noexcept;
 
 	private:
-		void setupLayer(uint_t lyr, uint_t cbb) const noexcept;
+		turbine::TimeMs updateObj(ObjState &state) noexcept;
+
+		void setupLayer(uint_t lyr, uint_t cbb) noexcept;
 
 };
 
diff --git a/src/jasper/modules/world/include/jasper/world/worldstatic.hpp b/src/jasper/modules/world/include/jasper/world/worldstatic.hpp
index 12289d5..a85597b 100644
--- a/src/jasper/modules/world/include/jasper/world/worldstatic.hpp
+++ b/src/jasper/modules/world/include/jasper/world/worldstatic.hpp
@@ -91,6 +91,7 @@ struct ObjTileRefSet {
 	uint8_t tileCnt{};
 	// each successive frame will use tileIdx[i] + tileCnt * frameNo for the tileIdx
 	uint8_t frames{};
+	uint16_t intervalMs{};
 };
 
 OX_MODEL_BEGIN(ObjTileRefSet)
@@ -101,6 +102,7 @@ OX_MODEL_BEGIN(ObjTileRefSet)
 	OX_MODEL_FIELD(tilesheetId)
 	OX_MODEL_FIELD(tileCnt)
 	OX_MODEL_FIELD(frames)
+	OX_MODEL_FIELD(intervalMs)
 OX_MODEL_END()
 
 [[nodiscard]]
diff --git a/src/jasper/modules/world/src/studio/worldeditor/worldeditorview.cpp b/src/jasper/modules/world/src/studio/worldeditor/worldeditorview.cpp
index 1ac1dca..0209e67 100644
--- a/src/jasper/modules/world/src/studio/worldeditor/worldeditorview.cpp
+++ b/src/jasper/modules/world/src/studio/worldeditor/worldeditorview.cpp
@@ -17,7 +17,7 @@ WorldEditorView::WorldEditorView(studio::StudioContext &sctx, WorldStatic const&
 ox::Error WorldEditorView::setupTile(
 		uint32_t const lyr,
 		uint32_t const x,
-		uint32_t const y) const noexcept {
+		uint32_t const y) noexcept {
 	m_world.setupTile(lyr, x, y);
 	return {};
 }
@@ -46,7 +46,7 @@ void WorldEditorView::draw(ox::Size const&targetSz) noexcept {
 	}
 	glutils::FrameBufferBind const frameBufferBind(m_frameBuffer);
 	if (m_animateWorld) {
-		auto const wakeUp = m_world.editorModeUpdate();
+		auto const wakeUp = m_world.update();
 		if (wakeUp.ok()) {
 			turbine::setRefreshWithin(m_sctx.tctx, wakeUp.value);
 		}
diff --git a/src/jasper/modules/world/src/studio/worldeditor/worldeditorview.hpp b/src/jasper/modules/world/src/studio/worldeditor/worldeditorview.hpp
index 665f49b..4fe8ce9 100644
--- a/src/jasper/modules/world/src/studio/worldeditor/worldeditorview.hpp
+++ b/src/jasper/modules/world/src/studio/worldeditor/worldeditorview.hpp
@@ -37,7 +37,7 @@ class WorldEditorView: public ox::SignalHandler {
 	public:
 		WorldEditorView(studio::StudioContext &ctx, WorldStatic const&worldStatic);
 
-		ox::Error setupTile(uint32_t lyr, uint32_t x, uint32_t y) const noexcept;
+		ox::Error setupTile(uint32_t lyr, uint32_t x, uint32_t y) noexcept;
 
 		void setupTiles() noexcept;
 
diff --git a/src/jasper/modules/world/src/world.cpp b/src/jasper/modules/world/src/world.cpp
index f6043f0..020c432 100644
--- a/src/jasper/modules/world/src/world.cpp
+++ b/src/jasper/modules/world/src/world.cpp
@@ -10,6 +10,11 @@
 
 namespace jasper::world {
 
+[[nodiscard]]
+static bool isUpdatingObj(ObjTileRefSet const&obj) noexcept {
+	return obj.frames > 1;
+}
+
 World::World(ncore::Context &nctx, WorldStatic const&worldStatic) noexcept:
 	m_nctx(nctx),
 	m_worldStatic(worldStatic) {}
@@ -46,7 +51,17 @@ ox::Error World::setupDisplay() noexcept {
 	return {};
 }
 
+ox::Result<int> World::update() noexcept {
+    turbine::TimeMs nextUpdateTime = ox::MaxValue<turbine::TimeMs>;
+	m_currentTicks = ticksMs(turbineCtx(m_nctx));
+	for (auto &state : m_objStates) {
+		nextUpdateTime = ox::min(nextUpdateTime, updateObj(state));
+	}
+	return static_cast<int>(nextUpdateTime - m_currentTicks);
+}
+
 void World::setupTiles() noexcept {
+	m_currentTicks = ticksMs(turbineCtx(m_nctx));
 	ncore::setBgStatus(m_nctx, 0); // disable all backgrounds
 	for (auto layerNo = 0u; auto const&layer : m_worldStatic.map) {
 		setupLayer(layerNo, layer.cbb);
@@ -57,7 +72,7 @@ void World::setupTiles() noexcept {
 void World::setupTile(
         uint32_t const lyr,
         uint32_t const x,
-        uint32_t const y) const noexcept {
+        uint32_t const y) noexcept {
     auto &t = tile(m_worldStatic, lyr, x, y);
     auto const tx = static_cast<int>(x) * 2;
     auto const ty = static_cast<int>(y) * 2;
@@ -78,11 +93,37 @@ void World::setupTile(
         .tileIdx = static_cast<uint_t>(obj.cbbIdx + 3),
         .palBank = obj.palBank,
     });
+	if (isUpdatingObj(obj)) {
+		m_objStates.emplace_back(ObjState{
+			.objIdx = t.objIdxRefSet,
+			.frame = 0,
+			.nextUpdateTime = m_currentTicks + obj.intervalMs,
+		});
+	}
+}
+
+turbine::TimeMs World::updateObj(ObjState &state) noexcept {
+	if (state.nextUpdateTime <= m_currentTicks) {
+        auto &obj = m_worldStatic.objTileRefSets[state.objIdx];
+		++state.frame;
+		if (state.frame >= obj.frames) {
+			state.frame = 0;
+		}
+		std::ignore = ncore::loadBgTileSheet(
+			m_nctx,
+			obj.cbb,
+			*m_tilesheets[obj.tilesheetId],
+			obj.cbbIdx,
+			static_cast<size_t>(obj.tilesheetIdx + state.frame * static_cast<uint16_t>(obj.tileCnt)),
+			obj.tileCnt);
+		state.nextUpdateTime = m_currentTicks + obj.intervalMs;
+	}
+    return state.nextUpdateTime;
 }
 
 void World::setupLayer(
 		uint_t const lyr,
-		uint_t const cbb) const noexcept {
+		uint_t const cbb) noexcept {
 	ncore::clearBg(m_nctx, lyr);
 	ncore::setBgStatus(m_nctx, lyr, true);
 	ncore::setBgCbb(m_nctx, lyr, cbb);
@@ -95,20 +136,4 @@ void World::setupLayer(
 	}
 }
 
-ox::Result<int> World::update() noexcept {
-	int expiresIn = 60'000;
-	return expiresIn;
-}
-
-#ifndef OX_OS_BareMetal
-ox::Result<int> World::editorModeUpdate() noexcept {
-	auto const time = ticksMs(turbineCtx(m_nctx));
-	if (time >= m_nextUpdateTime) {
-		turbine::TimeMs expiresIn = 60'000;
-		m_nextUpdateTime = time + expiresIn;
-	}
-	return static_cast<int>(m_nextUpdateTime - time);
-}
-#endif
-
 }
diff --git a/src/jasper/modules/world/src/worldstatic.cpp b/src/jasper/modules/world/src/worldstatic.cpp
index 73c26fd..a24a282 100644
--- a/src/jasper/modules/world/src/worldstatic.cpp
+++ b/src/jasper/modules/world/src/worldstatic.cpp
@@ -167,6 +167,7 @@ ox::Result<uint8_t> WorldStaticLoader::setupTileResrc(DocObjRef const&docObjRef)
 		.tilesheetId = tsIdx,
 		.tileCnt = subsheetTileCnt(*subsheet),
 		.frames = obj->frames,
+		.intervalMs = obj->intervalMs,
 	});
 	m_cbbIt += refSet.tileCnt;
 	m_resourcesChanged = true;
diff --git a/src/jasper/player/app.cpp b/src/jasper/player/app.cpp
index a4a0786..0d0ced4 100644
--- a/src/jasper/player/app.cpp
+++ b/src/jasper/player/app.cpp
@@ -43,11 +43,11 @@ ox::Error run(
 	}
 	setUpdateHandler(*tctx, [](turbine::Context &tctx) -> int {
 		auto &world = *applicationData<world::World>(tctx);
-		auto [sleepTime, err] = world.update();
+		auto const [sleepTime, err] = world.update();
 		if (err) {
 			oxLogError(err);
 		}
-		return 0;
+		return sleepTime;
 	});
 	OX_RETURN_ERROR(turbine::run(*tctx));
 	oxOut("Exiting...\n");