diff --git a/assets/map/map/0_0.json b/assets/map/map/0_0_0.json
similarity index 100%
rename from assets/map/map/0_0.json
rename to assets/map/map/0_0_0.json
diff --git a/src/asset/asset.c b/src/asset/asset.c
index 1c8be10..68f126a 100644
--- a/src/asset/asset.c
+++ b/src/asset/asset.c
@@ -167,6 +167,14 @@ errorret_t assetInit(void) {
   errorOk();
 }
 
+bool_t assetFileExists(const char_t *filename) {
+  assertStrLenMax(filename, FILENAME_MAX, "Filename too long.");
+
+  zip_int64_t idx = zip_name_locate(ASSET.zip, filename, 0);
+  if(idx < 0) return false;
+  return true;
+}
+
 errorret_t assetLoad(const char_t *filename, void *output) {
   assertStrLenMax(filename, FILENAME_MAX, "Filename too long.");
   assertNotNull(output, "Output pointer cannot be NULL.");
diff --git a/src/asset/asset.h b/src/asset/asset.h
index 6d6b8e0..c482053 100644
--- a/src/asset/asset.h
+++ b/src/asset/asset.h
@@ -69,6 +69,14 @@ static asset_t ASSET;
  */
 errorret_t assetInit(void);
 
+/**
+ * Checks if an asset file exists.
+ * 
+ * @param filename The filename of the asset to check.
+ * @return true if the asset file exists, false otherwise.
+ */
+bool_t assetFileExists(const char_t *filename);
+
 /**
  * Loads an asset by its filename, the output type depends on the asset type.
  * 
diff --git a/src/asset/type/assetchunk.c b/src/asset/type/assetchunk.c
index 533446e..4be78ef 100644
--- a/src/asset/type/assetchunk.c
+++ b/src/asset/type/assetchunk.c
@@ -32,6 +32,12 @@ errorret_t assetChunkLoad(assetcustom_t custom) {
   assertNotNull(custom.zipFile, "Zip file pointer cannot be NULL");
 
   chunk_t *chunk = (chunk_t *)custom.output;
+  printf(
+    "Loading chunk asset at position (%d, %d, %d)...\n",
+    chunk->position.x,
+    chunk->position.y,
+    chunk->position.z
+  );
 
   // Read header
   assetchunkheader_t header;
diff --git a/src/engine/engine.c b/src/engine/engine.c
index 2bd7a51..f536d65 100644
--- a/src/engine/engine.c
+++ b/src/engine/engine.c
@@ -42,8 +42,8 @@ errorret_t engineInit(const int32_t argc, const char_t **argv) {
 errorret_t engineUpdate(void) {
   timeUpdate();
   inputUpdate();
-  
-  rpgUpdate();
+
+  errorChain(rpgUpdate());
   uiUpdate();
   sceneManagerUpdate();
   errorChain(displayUpdate());
diff --git a/src/rpg/rpg.c b/src/rpg/rpg.c
index b6ad820..1ad3c11 100644
--- a/src/rpg/rpg.c
+++ b/src/rpg/rpg.c
@@ -20,7 +20,7 @@ errorret_t rpgInit(void) {
   // Init cutscene subsystem
   cutsceneSystemInit();
 
-  mapInit();
+  errorChain(mapInit());
 
   rpgCameraInit();
   rpgTextboxInit();
@@ -41,9 +41,11 @@ errorret_t rpgInit(void) {
   errorOk();
 }
 
-void rpgUpdate(void) {
+errorret_t rpgUpdate(void) {
   #if TIME_FIXED == 0
-    if(TIME.dynamicUpdate) return;
+    if(TIME.dynamicUpdate) {
+      errorOk();
+    }
   #endif
 
   // TODO: Do not update if the scene is not the map scene?
@@ -57,9 +59,10 @@ void rpgUpdate(void) {
   } while(++ent < &ENTITIES[ENTITY_COUNT]);
 
   cutsceneSystemUpdate();
-  rpgCameraUpdate();
+  errorChain(rpgCameraUpdate());
+  errorOk();
 }
 
 void rpgDispose(void) {
-  
+  mapDispose();
 }
\ No newline at end of file
diff --git a/src/rpg/rpg.h b/src/rpg/rpg.h
index d9ee07c..7460dfb 100644
--- a/src/rpg/rpg.h
+++ b/src/rpg/rpg.h
@@ -21,8 +21,10 @@ errorret_t rpgInit(void);
 
 /**
  * Update the RPG subsystem.
+ * 
+ * @return An error code.
  */
-void rpgUpdate(void);
+errorret_t rpgUpdate(void);
 
 /**
  * Dispose of the RPG subsystem.
diff --git a/src/rpg/rpgcamera.c b/src/rpg/rpgcamera.c
index 18de59a..355cc13 100644
--- a/src/rpg/rpgcamera.c
+++ b/src/rpg/rpgcamera.c
@@ -17,7 +17,7 @@ void rpgCameraInit(void) {
   memoryZero(&RPG_CAMERA, sizeof(rpgcamera_t));
 }
 
-void rpgCameraUpdate(void) {
+errorret_t rpgCameraUpdate(void) {
   chunkpos_t chunkPos;
 
   switch(RPG_CAMERA.mode) {
@@ -27,7 +27,9 @@ void rpgCameraUpdate(void) {
 
     case RPG_CAMERA_MODE_FOLLOW_ENTITY: {
       entity_t *entity = &ENTITIES[RPG_CAMERA.followEntity.followEntityId];
-      if(entity->type == ENTITY_TYPE_NULL) return;
+      if(entity->type == ENTITY_TYPE_NULL) {
+        errorOk();
+      }
 
       // Update map position to match camera. By default map wants to know the
       // top left but we want to set the center, so we need to sub half map size
@@ -39,9 +41,10 @@ void rpgCameraUpdate(void) {
       assertUnreachable("Invalid RPG camera mode");
   }
   
-  mapPositionSet((chunkpos_t){
+  errorChain(mapPositionSet((chunkpos_t){
     .x = chunkPos.x - (MAP_CHUNK_WIDTH / 2),
     .y = chunkPos.y - (MAP_CHUNK_HEIGHT / 2),
     .z = chunkPos.z - (MAP_CHUNK_DEPTH / 2)
-  });
+  }));
+  errorOk();
 }
\ No newline at end of file
diff --git a/src/rpg/rpgcamera.h b/src/rpg/rpgcamera.h
index 4338d03..07cf991 100644
--- a/src/rpg/rpgcamera.h
+++ b/src/rpg/rpgcamera.h
@@ -7,6 +7,7 @@
 
 #pragma once
 #include "rpg/world/worldpos.h"
+#include "error/error.h"
 
 typedef enum {
   RPG_CAMERA_MODE_FREE,
@@ -33,5 +34,7 @@ void rpgCameraInit(void);
 
 /**
  * Updates the RPG camera.
+ * 
+ * @return An error code.
  */
-void rpgCameraUpdate(void);
\ No newline at end of file
+errorret_t rpgCameraUpdate(void);
\ No newline at end of file
diff --git a/src/rpg/world/map.c b/src/rpg/world/map.c
index 5c2dbda..33f22e6 100644
--- a/src/rpg/world/map.c
+++ b/src/rpg/world/map.c
@@ -12,7 +12,7 @@
 
 map_t MAP;
 
-void mapInit() {
+errorret_t mapInit() {
   memoryZero(&MAP, sizeof(map_t));
 
   // Init the default chunks. In future I'll probably make this based on where
@@ -26,16 +26,20 @@ void mapInit() {
         chunk->position.y = y;
         chunk->position.z = z;
         MAP.chunkOrder[index] = chunk;
-        mapChunkLoad(chunk);
+        errorChain(mapChunkLoad(chunk));
         index++;
       }
     }
   }
+
+  errorOk();
 }
 
-void mapPositionSet(const chunkpos_t newPos) {
+errorret_t mapPositionSet(const chunkpos_t newPos) {
   const chunkpos_t curPos = MAP.chunkPosition;
-  if(chunkPositionIsEqual(curPos, newPos)) return;
+  if(chunkPositionIsEqual(curPos, newPos)) {
+    errorOk();
+  }
 
   // Determine which chunks remain loaded
   chunkindex_t chunksRemaining[MAP_CHUNK_COUNT] = {0};
@@ -97,7 +101,7 @@ void mapPositionSet(const chunkpos_t newPos) {
           chunkIndex = chunksFreed[--freedCount];
           chunk_t *chunk = &MAP.chunks[chunkIndex];
           chunk->position = newChunkPos;
-          mapChunkLoad(chunk);
+          errorChain(mapChunkLoad(chunk));
         }
 
         MAP.chunkOrder[orderIndex++] = &MAP.chunks[chunkIndex];
@@ -107,22 +111,44 @@ void mapPositionSet(const chunkpos_t newPos) {
 
   // Update map position
   MAP.chunkPosition = newPos;
+
+  errorOk();
 }
 
 void mapUpdate() {
   
 }
 
+void mapDispose() {
+  for(chunkindex_t i = 0; i < MAP_CHUNK_COUNT; i++) {
+    mapChunkUnload(&MAP.chunks[i]);
+  }
+}
+
 void mapChunkUnload(chunk_t* chunk) {
-  printf("Unloading chunk at (%d, %d, %d)\n",
+  for(uint8_t i = 0; i < chunk->meshCount; i++) {
+    meshDispose(&chunk->meshes[i]);
+  }
+}
+
+errorret_t mapChunkLoad(chunk_t* chunk) {
+  char_t buffer[64];
+
+  chunk->meshCount = 0;
+
+  snprintf(buffer, sizeof(buffer), "map/map/%d_%d_%d.dcf",
     chunk->position.x,
     chunk->position.y,
     chunk->position.z
   );
-}
 
-void mapChunkLoad(chunk_t* chunk) {
-  errorCatch(errorPrint(assetLoad("map/map/0_0.dcf", chunk)));
+  if(!assetFileExists(buffer)) {
+    memoryZero(chunk->tiles, sizeof(chunk->tiles));
+    errorOk();
+  }
+
+  errorChain(assetLoad(buffer, chunk));
+  errorOk();
 }
 
 chunkindex_t mapGetChunkIndexAt(const chunkpos_t position) {
diff --git a/src/rpg/world/map.h b/src/rpg/world/map.h
index 6e1f33a..bb494e2 100644
--- a/src/rpg/world/map.h
+++ b/src/rpg/world/map.h
@@ -18,20 +18,28 @@ extern map_t MAP;
 
 /**
  * Initializes the map.
+ * 
+ * @return An error code.
  */
-void mapInit();
+errorret_t mapInit();
 
 /**
  * Updates the map.
  */
 void mapUpdate();
 
+/**
+ * Disposes of the map.
+ */
+void mapDispose();
+
 /**
  * Sets the map position and updates chunks accordingly.
  * 
  * @param newPos The new chunk position.
+ * @return An error code.
  */
-void mapPositionSet(const chunkpos_t newPos);
+errorret_t mapPositionSet(const chunkpos_t newPos);
 
 /**
  * Unloads a chunk.
@@ -44,8 +52,9 @@ void mapChunkUnload(chunk_t* chunk);
  * Loads a chunk.
  * 
  * @param chunk The chunk to load.
+ * @return An error code.
  */
-void mapChunkLoad(chunk_t* chunk);
+errorret_t mapChunkLoad(chunk_t* chunk);
 
 /**
  * Gets the index of a chunk, within the world, at the given position.
diff --git a/tools/assetstool/processmap.py b/tools/assetstool/processmap.py
index ff81202..e7b049f 100644
--- a/tools/assetstool/processmap.py
+++ b/tools/assetstool/processmap.py
@@ -14,16 +14,13 @@ TILE_WIDTH = 16.0
 TILE_HEIGHT = 16.0
 TILE_DEPTH = 11.36
 
-def createQuadForTile(tileIndex, x=0, y=0, z=0):
+def processTile(tileIndex, x=0, y=0, z=0):
   vertices = []
   indices = []
 
   # Tile 0, nothing
   if tileIndex == 0:
-    return {
-      'vertices': vertices,
-      'indices': indices
-    }
+    return None
 
   # Determine color for checkerboard pattern
   color = (255,255,255) if (x + y) % 2 == 0 else (0,0,0)
@@ -82,8 +79,8 @@ def processChunk(path):
     z = i // (CHUNK_WIDTH * CHUNK_HEIGHT)
 
     # Add tile 3D model
-    result = createQuadForTile(tile, x, y, z)
-    if len(result['vertices']) > 0:
+    result = processTile(tile, x, y, z)
+    if result is not None and len(result['vertices']) > 0:
       base = len(baseModel['vertices'])
       quad_indices = [base + idx for idx in result['indices']]
       baseModel['vertices'].extend(result['vertices'])