Simon Tatham's Portable Puzzle Collection
If you’re a fan of Japanese logic puzzles, like Suduko, Hanjie and Slitherlink then you’ll love this guy’s page, he’s put together a very impressive collection of free logic puzzles games. They all include generators so you’ve got an infinite amounts of possible puzzles, each application has a tiny file size and the graphics are all fully scalable which well handy if you’re needing a quick little distraction sitting on one corner of your screen!