If you really, really want to kill some time today (and possibly the rest of your week), don't miss Simon Tatham's Portable Puzzle Collection, a bundle of 24 open source, cross-platform puzzle games. Many of them will look familiar, like Solo (Sudoku), Mines (Minesweeper), and Guess (Mastermind), others perhaps not, but if you like puzzles you're guaranteed to find something addicing in the collection. I spent more time this weekend than I'd like to admit playing Bridges, Loopy (a.k.a. Slither Link) and Slant. Each of the games has multiple difficulty levels, save and load functions, multi-level undo and redo, and a few more features, and each one is available for Windows, Linux, Mac OS X, and Palm OS. As if that weren't impressive enough, every puzzle is a download of less than 100kb.

[Via Anarchaia]