Big2Small is a goofy homebrew puzzle game for the original Game Boy and Game Boy Color.
https://mdsteele.games/big2small/
To compile, first install RGBDS, then run
make. The ROM file will be placed at ./out/big2small.gb, and from there
can be loaded into a Game Boy emulator.
Big2Small is licensed under the GNU GPL, version 3. Big2Small is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Big2Small is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
The complete license can be found in the LICENSE file.