GB Studio is a free, programming-free, tool for making games that can be played on either a Game Boy or an emulator. It can even export things to a browser-based emulator so you can easily share games.
Features-wise the games are a bit like Bitsy; walk round, interact with things.
- GB Studio in the Guides section.
- GB-Studio.gpl A Gnu IMP-compatible palette with all the colours GB Studio graphics require.