Tontie is one of the most challening, addictive, and fun Flash games I've ever played. It's basically a super-advanced version of Whack-a-Mole: Baddies pop up from the nine-whole grid and you whack the corresponding key on your numeric keypad to bash them. It gets much more complicated very quickly, however: Some baddies yield hearts, coins, or other bonuses when whacked, each level adds new challenges like baddies that can only be bashed at particular times, you can buy better hammers and other abilities using your coins, and of course the game steadily speeds up the farther you get.
Tags: freeware