This game is based on Color Flood by WetPalm, itself based on Flood-It! by LabPixies (as far as I can tell). This game has been shown to be NP-hard, and is thus non-trivial ;)
Install it with:
$ raco pkg install color-flood
or via DrRacket File/Install package.
Start it with:
$ racket -l color-flood
or in DrRacket, click on File/Open require path and enter color-flood/main.rkt. Then run the file.
