Ultimate Flash Sonic is a fan made Sonic the Hedgehog game made for Flash. It takes assets from various Sonic games, mostly from the recently released (at the time) Sonic Advance 1 and 2 games on GBA. Despite only having 2 worlds, the gameplay is similar to the GBA series of games.
grindersky & TheAmazingYucemu stop Eggman's plans in record time.