diff --git a/code/game/src/assets.c b/code/game/src/assets.c
index 0d9ee57..bac9f36 100644
--- a/code/game/src/assets.c
+++ b/code/game/src/assets.c
@@ -18,6 +18,11 @@ typedef struct {
 
 #include "assets_list.c"
 
+#define ASSET_FRAME_RENDER_MS (1.0/10.0)
+#define ASSET_FRAME_SKIP 2
+static int64_t assets_frame_counter = 1;
+static double assets_frame_next_draw = 0.0;
+
 int32_t assets_setup(void) {
     for (uint32_t i=0; i<ASSETS_COUNT; i++) {
         asset *b = &assets[i];
@@ -27,21 +32,48 @@ int32_t assets_setup(void) {
                 b->tex = texgen_build_sprite(b->id);
             }break;
             
+            case AKIND_ANIM: {
+                b->tex = texgen_build_anim(b->id, 0);
+            }break;
+            
             case AKIND_SOUND: {
                 // TODO(zaklaus): soundgen
             }break;
             
-            default: {
-                // TODO(zaklaus): assert
-            }break;
+            default: break;
         }
     }
+    
+    assets_frame_next_draw = zpl_time_rel() + ASSET_FRAME_RENDER_MS;
+    return 0;
+}
+
+int32_t assets_frame(void) {
+    if (assets_frame_next_draw < zpl_time_rel()) {
+        for (uint32_t i=0; i<ASSETS_COUNT; i++) {
+            asset *b = &assets[i];
+            
+            switch (b->kind) {
+                case AKIND_ANIM: {
+                    UnloadTexture(b->tex);
+                    b->tex = texgen_build_anim(b->id, assets_frame_counter);
+                }break;
+                
+                default: break;
+            }
+        }
+        
+        assets_frame_next_draw = zpl_time_rel() + ASSET_FRAME_RENDER_MS;
+        assets_frame_counter += ASSET_FRAME_SKIP;
+    }
+    
     return 0;
 }
 
 void assets_destroy(void) {
     for (uint32_t i=0; i<ASSETS_COUNT; i++) {
         switch (assets[i].kind) {
+            case AKIND_ANIM:
             case AKIND_TEXTURE: {
                 UnloadTexture(assets[i].tex);
             }break;
@@ -50,11 +82,8 @@ void assets_destroy(void) {
                 // TODO(zaklaus): soundgen
             }break;
             
-            default: {
-                // TODO(zaklaus): assert
-            }break;
+            default: break;
         }
-        
     }
 }
 
diff --git a/code/game/src/assets.h b/code/game/src/assets.h
index 116570c..5d6e69e 100644
--- a/code/game/src/assets.h
+++ b/code/game/src/assets.h
@@ -41,12 +41,14 @@ typedef enum {
 
 typedef enum {
     AKIND_TEXTURE,
+    AKIND_ANIM,
     AKIND_SOUND,
     
     FORCE_AKIND_UINT8 = UINT8_MAX
 } asset_kind;
 
 int32_t assets_setup(void);
+int32_t assets_frame(void);
 void assets_destroy(void);
 
 uint16_t assets_find(asset_id id);
diff --git a/code/game/src/assets_list.c b/code/game/src/assets_list.c
index e3cb653..3732807 100644
--- a/code/game/src/assets_list.c
+++ b/code/game/src/assets_list.c
@@ -8,6 +8,7 @@
 
 #define ASSET_SND(asset) ASSET_ENTRY(asset, AKIND_SOUND)
 #define ASSET_TEX(asset) ASSET_ENTRY(asset, AKIND_TEXTURE)
+#define ASSET_ANI(asset) ASSET_ENTRY(asset, AKIND_ANIM)
 
 static asset assets[] = {
     ASSET_TEX(ASSET_EMPTY),
@@ -19,7 +20,7 @@ static asset assets[] = {
     ASSET_TEX(ASSET_DEV),
     ASSET_TEX(ASSET_GROUND),
     ASSET_TEX(ASSET_DIRT),
-    ASSET_TEX(ASSET_WATER),
+    ASSET_ANI(ASSET_WATER),
     ASSET_TEX(ASSET_LAVA),
     ASSET_TEX(ASSET_WALL),
     ASSET_TEX(ASSET_HILL),
diff --git a/code/game/src/gen/texgen.c b/code/game/src/gen/texgen.c
index 841d29a..3246510 100644
--- a/code/game/src/gen/texgen.c
+++ b/code/game/src/gen/texgen.c
@@ -1,51 +1,72 @@
 #include "gen/texgen.h"
 #include "world/world.h"
 #include "texgen_data.c"
-
-#define ZPL_NANO
 #include "zpl.h"
 
 static inline
-Texture2D LoadImageEco(const char *name) {
+Texture2D LoadTexEco(const char *name) {
     static char filename[128];
     zpl_snprintf(filename,  128, "art/gen/%s.png", name);
     return LoadTexture(filename);
 }
 
-Texture2D texgen_build_sprite(asset_id id) {
+static inline
+Image LoadImageEco(const char *name) {
+    static char filename[128];
+    zpl_snprintf(filename,  128, "art/gen/%s.png", name);
+    return LoadImage(filename);
+}
+
+static inline
+Texture2D Image2TexEco(Image image) {
+    Texture2D tex = LoadTextureFromImage(image);
+    UnloadImage(image);
+    return tex;
+}
+
+static inline
+Texture2D GenColorEco(Color color) {
+    Image img = GenImageColor(1, 1, color);
+    return Image2TexEco(img);
+}
+
+Texture2D texgen_build_anim(asset_id id, int64_t counter) {
+    (void)counter;
     switch (id) {
-        case ASSET_EMPTY: {
-            Image img = GenImageColor(1, 1, PINK);
-            Texture2D tex = LoadTextureFromImage(img);
-            UnloadImage(img);
-            return tex;
+        case ASSET_WATER: {
+            Image img = LoadImageEco("water");
+            ImageColorBrightness(&img, zpl_abs((counter % 64 - 32)*2));
+            return Image2TexEco(img);
         }break;
         
-        case ASSET_DEMO_ICEMAKER: return LoadImageEco("demo_icemaker");
-        
-        // NOTE(zaklaus): blocks
-        case ASSET_FENCE: return LoadImageEco("fence");
-        case ASSET_GROUND: return LoadImageEco("grass");
-        case ASSET_DIRT: return LoadImageEco("dirt");
-        case ASSET_WALL: return LoadImageEco("asphalt");
-        case ASSET_HILL_SNOW:
-        case ASSET_HILL: return LoadImageEco("rock");
-        case ASSET_WATER: return LoadImageEco("water");
-        case ASSET_LAVA: return LoadImageEco("lava");
-        case ASSET_WOOD: return LoadImageEco("wood");
-        case ASSET_TREE: return LoadImageEco("tree");
-        
-        case ASSET_BELT:
-        case ASSET_BELT_RIGHT: return LoadImageEco("belt_right");
-        case ASSET_BELT_LEFT: return LoadImageEco("belt_left");
-        case ASSET_BELT_UP: return LoadImageEco("belt_up");
-        case ASSET_BELT_DOWN: return LoadImageEco("belt_down");
-        
-        default: {
-            Image img = GenImageColor(1, 1, RAYWHITE);
-            Texture2D tex = LoadTextureFromImage(img);
-            UnloadImage(img);
-            return tex;
-        }break;
+        default: return GenColorEco(PINK); break;
+    }
+}
+
+Texture2D texgen_build_sprite(asset_id id) {
+    switch (id) {
+        case ASSET_BUILDMODE_HIGHLIGHT: return GenColorEco(WHITE); break;
+        
+        // NOTE(zaklaus): items
+        case ASSET_DEMO_ICEMAKER: return LoadTexEco("demo_icemaker");
+        
+        // NOTE(zaklaus): blocks
+        case ASSET_FENCE: return LoadTexEco("fence");
+        case ASSET_GROUND: return LoadTexEco("grass");
+        case ASSET_DIRT: return LoadTexEco("dirt");
+        case ASSET_WALL: return LoadTexEco("asphalt");
+        case ASSET_HILL_SNOW:
+        case ASSET_HILL: return LoadTexEco("rock");
+        case ASSET_LAVA: return LoadTexEco("lava");
+        case ASSET_WOOD: return LoadTexEco("wood");
+        case ASSET_TREE: return LoadTexEco("tree");
+        
+        case ASSET_BELT:
+        case ASSET_BELT_RIGHT: return LoadTexEco("belt_right");
+        case ASSET_BELT_LEFT: return LoadTexEco("belt_left");
+        case ASSET_BELT_UP: return LoadTexEco("belt_up");
+        case ASSET_BELT_DOWN: return LoadTexEco("belt_down");
+        
+        default: return GenColorEco(PINK); break;
     }
 }
diff --git a/code/game/src/gen/texgen.h b/code/game/src/gen/texgen.h
index 1af8f92..be9fdbf 100644
--- a/code/game/src/gen/texgen.h
+++ b/code/game/src/gen/texgen.h
@@ -4,4 +4,5 @@
 #include "world/blocks.h"
 #include "assets.h"
 
+Texture2D texgen_build_anim(asset_id id, int64_t counter);
 Texture2D texgen_build_sprite(asset_id id);
diff --git a/code/game/src/platform_raylib.c b/code/game/src/platform_raylib.c
index 48ffa2e..ca3d663 100644
--- a/code/game/src/platform_raylib.c
+++ b/code/game/src/platform_raylib.c
@@ -172,6 +172,8 @@ void platform_render() {
         game_world_view_active_entity_map(do_entity_fadeinout);
     }
     
+    assets_frame();
+    
     BeginDrawing();
     {
         profile (PROF_RENDER) {
diff --git a/project.4coder b/project.4coder
index d3860aa..3bcefe1 100644
--- a/project.4coder
+++ b/project.4coder
@@ -1,69 +1,70 @@
-version(1);
-
-project_name = "eco2d";
-
-patterns =
-{
-    "*.c",
-    "*.cpp",
-    "*.jai",
-    "*.odin",
-    "*.zig",
-    "*.h",
-    "*.inc",
-    "*.bat",
-    "*.sh",
-    "*.4coder",
-    "*.txt",
-    "*.cmake",
-};
-
-blacklist_patterns =
-{
-    ".*",
-};
-
-load_paths =
-{
-    {{
-        { ".", .recursive = false, .relative = true },
-        { "code/game", .recursive = true, .relative = true },
-        { "code/common", .recursive = true, .relative = true },
-        { "code/modules", .recursive = true, .relative = true },
-        { "code/vendors", .recursive = true, .relative = true },
-        { "cmake", .recursive = true, .relative = true },
-        { "build/_deps/raylib-src/src", .recursive = true, .relative = true }
-    }, .os = "win"}
-};
-
-command_list =
-{
-    
-    {
-        .name = "build",
-        .out = "*compilation*",
-        .footer_panel = true,
-        .save_dirty_files = true,
-        .cursor_at_end = false,
-        .cmd =
-        {
-            { "cmake --build build", .os = "win" },
-        },
-    },
-    
-    {
-        .name = "run",
-        .out = "*console*",
-        .footer_panel = false,
-        .save_dirty_files = true,
-        .cursor_at_end = true,
-        .cmd =
-        {
-            { "run.bat", .os = "win" },
-        },
-    },
-    
-};
-
-fkey_command[1] = "build";
-fkey_command[2] = "run";
+version(1);
+
+project_name = "eco2d";
+
+patterns =
+{
+    "*.c",
+    "*.cpp",
+    "*.jai",
+    "*.odin",
+    "*.zig",
+    "*.h",
+    "*.inc",
+    "*.bat",
+    "*.sh",
+    "*.4coder",
+    "*.txt",
+    "*.cmake",
+    "*.md",
+};
+
+blacklist_patterns =
+{
+    ".*",
+};
+
+load_paths =
+{
+    {{
+            { ".", .recursive = false, .relative = true },
+            { "code/game", .recursive = true, .relative = true },
+            { "code/common", .recursive = true, .relative = true },
+            { "code/modules", .recursive = true, .relative = true },
+            { "code/vendors", .recursive = true, .relative = true },
+            { "cmake", .recursive = true, .relative = true },
+            { "build/_deps/raylib-src/src", .recursive = true, .relative = true }
+        }, .os = "win"}
+};
+
+command_list =
+{
+    
+    {
+        .name = "build",
+        .out = "*compilation*",
+        .footer_panel = true,
+        .save_dirty_files = true,
+        .cursor_at_end = false,
+        .cmd =
+        {
+            { "cmake --build build", .os = "win" },
+        },
+    },
+    
+    {
+        .name = "run",
+        .out = "*console*",
+        .footer_panel = false,
+        .save_dirty_files = true,
+        .cursor_at_end = true,
+        .cmd =
+        {
+            { "run.bat", .os = "win" },
+        },
+    },
+    
+};
+
+fkey_command[1] = "build";
+fkey_command[2] = "run";