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225
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About the game
225 is the classic 15-puzzle, nested. The screen shows a four-by-four frame with fifteen pieces and one empty space, and each of those pieces is a small four-by-four sliding puzzle of its own, with fifteen tiles and a gap. Fifteen puzzles of fifteen tiles each: 225 tiles in all.
The game is won when the big puzzle is in order and every small one is solved as well. There is no timer, no move counter and no text at all: everything is shown with pictures, and the author designed it to be playable without telling colours apart.
The game was first made for the Game Boy for Mini Jam 136, in July 2023, and its author then ported it to the Game Gear and the Master System. This is the Game Gear version, release 1.1.
Playing it here
This is a homebrew game made for the Game Gear: a new game by an independent developer, not a commercial release. It runs here in Gearsystem, a Master System and Game Gear emulator compiled to WebAssembly. Click Play now, then press Z or Enter on the title screen. Every game starts from a new random shuffle.
The game itself does not save. F2 saves the full state of the emulator in this browser and F4 brings it back, which is handy for a long session. A gamepad works too.
Controls
| Key | Game Gear button | Action |
|---|---|---|
| Arrow keys | D-pad | turn the cursor; inside a small puzzle, slide a tile |
| Z | Button 1 | move the piece you are facing into the gap |
| X | Button 2 | enter the small puzzle you are facing; leave it again |
| Enter | Start | start a game from the title screen |
| F2 / F4 | — | save / load the emulator state |
A few things worth knowing
The cursor lives in the gap. On the big board you always stand in the empty space; the arrows only choose which neighbouring piece you are looking at, and Z slides it in.
Moving a piece scrambles it. Every time a small puzzle is slid across the big board it gets shuffled again. Put the big board in order first and solve the small puzzles afterwards.
Inside, the arrows act at once. In a small puzzle each arrow press slides a tile straight away, so there is no need to press Z there.
A shake means no. If the screen shakes, the move was not possible, usually because you are facing the edge of the board.
Credits and licence
225 was designed and programmed by Pineberry Fox, who also drew the graphics and wrote the Game Gear sound effects player. It was built with GBDK-2020. The game is released under the MIT licence. The licence text is linked from this page.