Today’s featured promo on MacUpdate offers Islands Mini-golf for US$12.95 (38% off, retail $31). “Islands Mini golf is a full-blown 3D game with a total of 54 colorful mini-golf holes, each located in a unique paradisiac tropical island. The game supports up to 4 simultaneous players (hot-seat) and an online score keeping system.” Islands Mini-golf requires Mac OS X 10.4 or later.