Join Knuckles from Sonic the Hedgehog on his hunt for the emeralds through all the Zones of Sonic 2 (excluding Sky Chase and Death Egg), along with a few extra levels. New Things: * Redesigned level select. * Redesigned score tally. * Tikal added as a playable character. * Competition mode enabled, get three out of five emeralds before your opponent. Each player gets one radar box that detects the emerald closest to them, and the difficulty setting does affect it. * More music choices. * Wait, what’s that in sound FA?