I've been working on implementing Minesweeper for the Fuzebox and it's nearing completion. The game will feature 3 difficulty levels: Easy (16x16, 20 mines), Medium (20x20, 40) and Expert(32x23, 99 mines). I'm quite happy with my progress so far; the base memory usage of the game code is roughly 410 bytes and probably doesn't peak much higher during game usage (although I haven't profiled it). The only task I have remaining is to alter it to support the Easy and Medium difficulty levels and a menu to change difficulty, then it is complete! The game will be released with full source code (of course)!
Here are some screenshots: