diff --git a/examples/game.rs b/examples/game.rs
index a54da88..7ff67b7 100644
--- a/examples/game.rs
+++ b/examples/game.rs
@@ -26,7 +26,7 @@ struct Rect {
   h: u16,
 }
 impl Rect {
-  pub fn intersect(self, other: Self) -> bool {
+  fn intersect(self, other: Self) -> bool {
     self.x < other.x + other.w
       && self.x + self.w > other.x
       && self.y < other.y + other.h
@@ -51,7 +51,7 @@ extern "C" fn main() -> ! {
   creatures[0].x = 11;
   creatures[0].y = 14;
   //
-  creatures[1].x = 41;
+  creatures[1].x = 44;
   creatures[1].y = 38;
   creatures[2].x = 100;
   creatures[2].y = 23;
@@ -63,9 +63,9 @@ extern "C" fn main() -> ! {
   let mut world = [[0_u8; 32]; 32];
   for i in 0..32 {
     world[0][i] = b'z';
-    world[31][i] = b'z';
+    world[19][i] = b'z';
     world[i][0] = b'z';
-    world[i][31] = b'z';
+    world[i][29] = b'z';
   }
   world[1][3] = b'B';
   world[2][3] = b'G';
@@ -78,12 +78,14 @@ extern "C" fn main() -> ! {
 
   TIMER0_CONTROL.write(TimerControl::new().with_enabled(true));
 
+  // bg
   BG_PALETTE.index(1).write(Color::MAGENTA);
-  OBJ_PALETTE.index(1).write(Color::CYAN);
-  OBJ_PALETTE.index(16 * 1 + 1).write(Color::GREEN);
-  OBJ_PALETTE.index(16 * 2 + 1).write(Color::RED);
-  OBJ_PALETTE.index(16 * 3 + 1).write(Color::BLUE);
-  OBJ_PALETTE.index(16 * 4 + 1).write(Color::YELLOW);
+  // obj
+  let colors =
+    [Color::CYAN, Color::GREEN, Color::RED, Color::BLUE, Color::YELLOW];
+  for (pal, color) in colors.iter().enumerate() {
+    obj_palbank(pal).index(1).write(*color);
+  }
 
   Cga8x8Thick.bitunpack_4bpp(CHARBLOCK0_4BPP.as_region(), 0);
   Cga8x8Thick.bitunpack_4bpp(OBJ_TILES.as_region(), 0);