There's a homebrew coder named icodeatwork who has released a homebrew game that people can try out and enjoy. It's called Let There be Light, and the basic premise is to transform different colored blocks into white blocks for matching and subsequent deletion from the grid.

Here's the situation, which is probably best explained by icodeatwork:

You've got three basic colors : RED, BLUE and YELLOW.

You can mix two of them:

* RED+BLUE=PURPLE
* RED+YELLOW=ORANGE
* BLUE+YELLOW=GREEN

Ok ? So far so good...

Then you need to have the three basic colors on one single block in order to create a white block:

* PURPLE + YELLOW = WHITE
* RED + GREEN = WHITE
* BLUE + ORANGE = WHITE

Once 3 white blocks are aligned, they disappear.

The game, while simple in premise, looks to be a challenging diversion due to the depth of the basic game mechanics. In any event, we managed to download the .ds.gba and the .sc.nds versions of the game (We're having problems grabbing the .nds version as esnips.com isn't responding properly.). Feel free to try the game out, and let us know what you think.