Math has never been my forte, but the recent craze of sliding block number puzzles has really pulled me in. Adding another game to the addiction is Bart Bonte with 25. Use the [arrow] keys to slide all the numbers on the screen. Blocks only move one spot at a time, instead of continuing to slide until they hit something, so will only merge with a matching numbered block when they are right next to each other with no where else to move. The number tiles are not added together, but progress upward one number at a time. Merging a couple of three blocks will make a four block, for example. Red blocks just get in your way, but if you line up three in a row, they'll disappear.
While 25 is clearly inspired by the recent popularity of Threes! and 2048, there's just enough different here for it to stand on its own. The red obstacles make getting blocks together more difficult and add another puzzle element to the game, while the slower movement of the numbers give the game a less frantic feel. While not as original as the games Bonte has given us before, 25 is worth a look, and before you know it you'll be trying to beat your high score... so you can brag in the comments.