RGB Absorber is a game I made as part of Game ProtoType Challenge v16
The themes were absorption and 4 colours.
So I decided to make a small "isometric" (it's actually closer to trimetric) game.
The aim of the game is to absorb the coloured beams by standing on a tile with the correct colour and getting hit by the beam.
Getting hit by the beam when on any other tile causes instant death.
Oh, yes, and the "4 colours" part of the theme has to do with there only being 4 tile colours in the game.