Company Ghoulsoft created these great apps:
NumFun - Gems, NumFun - Addition, NumFun - Multiplication, NumFun - Seeds, NumFun - Problems, NumFun - Cosmos, NumFun - Mining, Math Challenge Online, Bottle Empire, Barrel Tap!, Blast the 80's, Neon Bouncer, Nitro Tunnel, Avoid the Nukes, and others..
