Jump Kid by allalonegamez is a platformer game made for Game Boy Advance.
At the beginning of each level, the level number appears. In the first world, the level number is the number of shooting stars (one large star = five small stars). In the second world, the level number matches the number of bats. Every world’s last level has no number. It is voluntary that you can reach the end of a level after you die.
The game contains 20 levels across 3 worlds. 9 levels in world 1. 5 levels in world 2. 2 levels in the castle. + 4 hidden levels. (To access them, at the title screen, press down, down, right, right, up, up)