PuzzleScript – an open-source HTML5 puzzle game engine
How have I never heard of this before. Super minimalist game-making tool for making elegant puzzle games. You’re not able to do anything and everything with it (the games have to be on a grid, and turn based, and not all rules are possible to code), but there are enough ideas that COULD be achieved with it that it seems potentially useful to pick up to scratch down simple prototypes. Awesome.