Simon Tatham's Puzzles – 2014-11-09-1643-4a8edc6

Collection of 36 single-player open-source logic puzzle games free, no ads, playable offline. All generated on demand with adjustable size/difficulty, so you'll never run out of puzzles. NFC lets you beam a puzzle to your friend's phone, like this: Available for other platforms at. Gd/sgtpuz