Sonic the Hedgehog Chaos

Side-scrolling platformer where Sonic or Tails race to recover six Chaos Emeralds before South Island sinks. Dr. Robotnik's theft of the Red Emerald destabilized the others, scattering them into a parallel dimension—and the island's now dropping into the ocean. You'll sprint through zones collecting rings, dodging traps, and accessing Special Stages to retrieve emeralds. Tails can fly for short bursts, offering alternate routes Sonic can't reach. Levels mix speed sections with precision jumps, plus boss encounters at each zone's end. The setup's straightforward: find the gems or the island drowns. If you want a Game Gear Sonic with two playable characters and a ticking-clock premise, this delivers that in compact stages.