diff --git a/assets_src/gfx/weapons-rigged.cdr b/assets_src/gfx/weapons-rigged.cdr
index 37ee430..6bd868f 100644
Binary files a/assets_src/gfx/weapons-rigged.cdr and b/assets_src/gfx/weapons-rigged.cdr differ
diff --git a/src/packages/game/IZ_app.c b/src/packages/game/IZ_app.c
index 220228e..64e3aef 100644
--- a/src/packages/game/IZ_app.c
+++ b/src/packages/game/IZ_app.c
@@ -120,7 +120,7 @@ IZ_AppResult IZ_AppRun(struct IZ_App* app, u8 argc, const char* argv[]) {
 
 	char asset_dir[255];
 	IZ_AssetResolveDir("weapon-operator", asset_dir);
-	u16 sprite_slot_index = IZ_VideoGetNextFreeSpriteSlot(&app->video_state);
+	u16 sprite_slot_index = IZ_VideoGetNextFreeSpriteSlot(&app->video_state, IZ_VIDEO_SPRITE_PRIORITY_MEDIUM);
 	IZ_VideoLoadSprite(&app->video_state, (IZ_VideoLoadSpriteParams) {
 		.dir = asset_dir,
 		.filename = "sprite.svg",
@@ -130,7 +130,7 @@ IZ_AppResult IZ_AppRun(struct IZ_App* app, u8 argc, const char* argv[]) {
 	app->video_state.active_sprites[sprite_slot_index].sprite.position = (IZ_Vector2D) { 100.f, 100.f };
 
 	IZ_AssetResolveDir("weapon-specialist", asset_dir);
-	sprite_slot_index = IZ_VideoGetNextFreeSpriteSlot(&app->video_state);
+	sprite_slot_index = IZ_VideoGetNextFreeSpriteSlot(&app->video_state, IZ_VIDEO_SPRITE_PRIORITY_MEDIUM);
 	IZ_VideoLoadSprite(&app->video_state, (IZ_VideoLoadSpriteParams) {
 		.dir = asset_dir,
 		.filename = "sprite.svg",
diff --git a/src/packages/game/core/IZ_entity.c b/src/packages/game/core/IZ_entity.c
index b948af3..ba3791b 100644
--- a/src/packages/game/core/IZ_entity.c
+++ b/src/packages/game/core/IZ_entity.c
@@ -1 +1,8 @@
 #include "IZ_entity.h"
+
+IZ_Entity* IZ_EntityNew(IZ_Entity attrs) {
+	// TODO let pool allocate memory for entity instead of malloc!
+	IZ_Entity* new_entity = (IZ_Entity*) malloc(sizeof(IZ_Entity));
+
+	return new_entity;
+}
diff --git a/src/packages/game/core/IZ_entity.h b/src/packages/game/core/IZ_entity.h
index f5cf831..61dc580 100644
--- a/src/packages/game/core/IZ_entity.h
+++ b/src/packages/game/core/IZ_entity.h
@@ -1,11 +1,16 @@
 #ifndef IZ_ENTITY_H
 #define IZ_ENTITY_H
 
+#include <stdlib.h>
 #include "../geometry/IZ_vector2d.h"
 
 typedef struct {
 	IZ_Vector2D pos;
+
+	IZ_Vector2D speed;
 	// TODO object appearance (sprite, sprites contain bounding boxes, collisions contain bounding boxes)
 } IZ_Entity;
 
+IZ_Entity* IZ_EntityNew(IZ_Entity);
+
 #endif
diff --git a/src/packages/game/core/IZ_object.h b/src/packages/game/core/IZ_object.h
index 62de6d3..5208506 100644
--- a/src/packages/game/core/IZ_object.h
+++ b/src/packages/game/core/IZ_object.h
@@ -9,7 +9,6 @@ typedef struct {
 	IZ_Entity as_entity;
 
 	IZ_Rect collision_rect;
-	IZ_Vector2D speed;
 } IZ_Object;
 
 #endif
diff --git a/src/packages/game/memory/memory.test.c b/src/packages/game/memory/memory.test.c
index 99175d9..c2f191a 100644
--- a/src/packages/game/memory/memory.test.c
+++ b/src/packages/game/memory/memory.test.c
@@ -109,7 +109,7 @@ spec("memory") {
 			it("deallocates old items to make way for new ones when the memory is full") {
 				IZ_PoolInitialize(&pool, sizeof(u32));
 
-				IZ_PoolAllocate(&pool, (IZ_PoolAllocationArgs){
+				void* p1 = IZ_PoolAllocate(&pool, (IZ_PoolAllocationArgs){
 					.size = sizeof(u16),
 					.priority = 0,
 					.timestamp = 0,
@@ -117,18 +117,48 @@ spec("memory") {
 				IZ_PoolAllocate(&pool, (IZ_PoolAllocationArgs){
 					.size = sizeof(u8),
 					.priority = 0,
-					.timestamp = 0,
+					.timestamp = 1,
 				});
 				IZ_PoolAllocate(&pool, (IZ_PoolAllocationArgs){
 					.size = sizeof(u8),
 					.priority = 0,
-					.timestamp = 0,
+					.timestamp = 2,
 				});
-				IZ_PoolAllocate(&pool, (IZ_PoolAllocationArgs){
+
+				void* p2 = IZ_PoolAllocate(&pool, (IZ_PoolAllocationArgs){
 					.size = sizeof(u8),
 					.priority = 0,
-					.timestamp = 0,
+					.timestamp = 3,
 				});
+
+				check(
+					p1 == p2,
+					"Old memory not properly deallocated."
+				);
+
+				void* p3 = IZ_PoolAllocate(&pool, (IZ_PoolAllocationArgs){
+					.size = sizeof(u8),
+					.priority = 0,
+					.timestamp = 4,
+				});
+
+				// FIXME here onwards
+
+				check(
+					p3 == p2 + sizeof(u8),
+					"Free memory not properly utilized."
+				);
+
+				void* p4 = IZ_PoolAllocate(&pool, (IZ_PoolAllocationArgs){
+					.size = sizeof(u8),
+					.priority = 0,
+					.timestamp = 5,
+				});
+
+				check(
+					p4 == p3 + sizeof(u8),
+					"Free memory not properly utilized."
+				);
 			}
 		}