SG57 came up with two classics for PSP, also providing source code. This one is a clone of Block Dude.

Features:

Pretty close to the same graphics as on the calculator, just colored
Has sound effects, just little ones though (from the playSound function in the tiffsdk gfx library)
Included levels are exact replicas of the originals
It supports up to 100 levels named consecutively in the lvl folder from 1.lvl to 100.lvl in a very easy to use map format.

Thanks to http://www.dcemu.co.uk for the news.

http://www.psp-hacks.com/2008/07/12/homebrew-hits-minesweeper-and-block-dude/