Kim - 8k, Windows only (sorry)

Swizpig says: "The object is to clear the board of red squares. Clicking on a square toggles it, along with the squares immediately next to it. You start off in Easy mode - the board having been generated from 20 random clicks. Medium and hard games have been generated from 30 and 40 clicks respectively. This is a clone of an old PD game on the Amiga, which I can't seem to find anywhere. It's named after the Amiga version, which was dedicated to Kim Somebody by the original author. But I first came across the game type in "Reaxion" for the C64."

Play Kim online here