Only in the combined version can you collect all 14 emeralds to unlock Hyper Sonic , Hyper Knuckles , and Super Tails , granting screen-clearing abilities and immense power. Gameplay and Level Design The game masterfully balances speed and exploration .

— An essential classic that perfected the Sonic formula before the series transitioned to 3D. I.R. fan project? Sonic & Knuckles + Sonic the Hedgehog 3 & Knuckles Review

“Some people say the best thing is speeding through as fast as possible, but I disagree. The best aspect is the ability to explore so much of these gigantic maps.” HonestGamers Standalone Sonic 3 Standalone S&K Combined (S3&K) Yes Knuckles Playable Yes (Full Game) Tails Playable Yes (Full Game) Hyper Forms Yes