When playing Sonic 3 alone, the game ends abruptly after the Launch Base Zone boss fight. Sonic defeats Dr. Robotnik, the Death Egg falls back down, and the credits roll. It feels incomplete because it is incomplete.
When playing the combined version, Knuckles has his own story, taking a different path to the final boss than Sonic does. 3. Super Emeralds and Hyper Forms sonicknuckleswsonic3bin better