diff --git a/CMakeLists.txt b/CMakeLists.txt
index b06f075..380d150 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,6 +27,7 @@ set(ASSETS_cg
   assets-cg/img/player.png
   assets-cg/img/wall.png
   assets-cg/img/spike.png
+  assets-cg/img/end.png
   # ...
 )
 
diff --git a/assets-cg/img/end.png b/assets-cg/img/end.png
new file mode 100644
index 0000000..6af4e86
Binary files /dev/null and b/assets-cg/img/end.png differ
diff --git a/assets-cg/img/fxconv-metadata.txt b/assets-cg/img/fxconv-metadata.txt
index d40aaa3..38c561a 100644
--- a/assets-cg/img/fxconv-metadata.txt
+++ b/assets-cg/img/fxconv-metadata.txt
@@ -8,4 +8,8 @@ wall.png:
 
 spike.png:
   type: bopti-image
-  name: img_spike
\ No newline at end of file
+  name: img_spike
+
+end.png:
+  type: bopti-image
+  name: img_end
\ No newline at end of file
diff --git a/include/main.h b/include/main.h
index 2bad117..152261d 100644
--- a/include/main.h
+++ b/include/main.h
@@ -3,32 +3,21 @@
 #define LEVEL_SIZE 16
 #define TILE_SIZE 12
 
-/* see we use a typedef like bellow
- * its lazy and allow you to type
- * Vec2 instead of struct TwoValues */
+// struct for a pair of values
 typedef struct Vec2 {
 	int x, y;
 } Vec2;
 
-/* we do da same with player cause laziness never killed nobody
- * wait */
+// struct for player's data
 typedef struct Player {
 	Vec2 pos;
 	Vec2 spawn;
 } Player;
 
-/* using a typedef is what cool kids do at least i think
- * you might no remember what `int x` is :(
- * if x is declared with `tile_t x` you know x is some tile :)
- * knowledge is power and cool
- * as bonus it looks cool in function declaration
- * cool stuff told u :D */
+// used for tiles
 typedef int tile_t;
 
 Vec2 search(tile_t x, tile_t level[16][16]);
-/* here u can see i replaced x and y arguments with your twovalues struct
- * u made smthing use it
- * it will be handy in the future and makes better looking code */
 int collide_pixel(Vec2 pos, tile_t obj, tile_t level[16][16]);
 int collide(Vec2 pos, int h, tile_t obj, tile_t level[16][16]);
 Player level_reset(Player player);
diff --git a/src/levels.c b/src/levels.c
index 65e98dc..040adee 100644
--- a/src/levels.c
+++ b/src/levels.c
@@ -1,12 +1,10 @@
 #include "main.h"
 
-/* see use tile_t cause these stuff are tiles
- * would you believe it? */
 const tile_t level[16][16] = {
 	{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
 	{1, 3, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 3, 1},
 	{1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1},
-	{1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1},
+	{1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 4, 0, 0, 1},
 	{1, 0, 0, 1, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1},
 	{1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1},
 	{1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1},
diff --git a/src/main.c b/src/main.c
index 0133e20..21cbdb2 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,3 +1,6 @@
+// ZkwuL by Massena
+// Optimisation and rewrite thanks to KikooDX
+
 #include <gint/display.h>
 #include <gint/keyboard.h>
 #include "main.h"
@@ -21,7 +24,7 @@ Vec2 search(tile_t x, tile_t level[16][16]) {
 
 int collide_pixel(Vec2 pos, tile_t obj, tile_t level[LEVEL_SIZE][LEVEL_SIZE]) {
 	// Check if there's something in (x, y)
-	if(obj == level[pos.x / TILE_SIZE][pos.y / TILE_SIZE]) {
+	if(obj == level[pos.y / TILE_SIZE][pos.x / TILE_SIZE]) {
 		return 1;
 	}
 	else {
@@ -30,9 +33,8 @@ int collide_pixel(Vec2 pos, tile_t obj, tile_t level[LEVEL_SIZE][LEVEL_SIZE]) {
 }
 
 int collide(Vec2 pos, int h, tile_t obj, tile_t level[LEVEL_SIZE][LEVEL_SIZE]) {
-	/* tl = top left
-	 * br = bottom right
-	 * avoid repetition later on ezier to work on */
+	// tl = top left
+	// br = bottom right
 	const Vec2 pos_tl = (Vec2){pos.x + h, pos.y + h};
 	const Vec2 pos_br = (Vec2){pos.x + TILE_SIZE - h - 1, pos.y + TILE_SIZE - h - 1};
 	// Check if there's something in
@@ -57,10 +59,12 @@ int main(void) {
 	extern bopti_image_t img_player;
 	extern bopti_image_t img_wall;
 	extern bopti_image_t img_spike;
+	extern bopti_image_t img_end;
 
 	extern tile_t level[LEVEL_SIZE][LEVEL_SIZE];
 
 	int running = 1;
+	int timer = 0; // lol
 
 	// player
 	Player player = {
@@ -87,6 +91,11 @@ int main(void) {
 						// spikes
 						dimage(m * TILE_SIZE, n * TILE_SIZE, &img_spike);
 						break;
+					case 4:
+						// end ring
+						dsubimage(m * TILE_SIZE, n * TILE_SIZE, &img_end,
+							((timer / 30) % 4) * 12, 0, 12, 12, 0);
+						break;
 				}
 			}
 		}
@@ -96,7 +105,7 @@ int main(void) {
 
 		dupdate();
 
-		/* if something has x and y, you probably want to use your Vec2 struct */
+		// 
 		Vec2 mov = {
 			.x = keydown(KEY_RIGHT) - keydown(KEY_LEFT),
 			.y = keydown(KEY_DOWN) - keydown(KEY_UP)
@@ -117,7 +126,11 @@ int main(void) {
 			player = level_reset(player);
 		}
 
-		if(keydown(KEY_EXIT)) running = 0;
+		if(keydown(KEY_EXIT) || collide(player.pos, 0, 4, level)) {
+			running = 0;
+		}
+
+		++timer; // lol^2
 	}
 
 	return 1;