Sonic the Hedgehog Triple Trouble is a platform game developed by Aspect and published by Sega for the Game Gear in 1994. It is the sequel to "Sonic Chaos" and features classic "Sonic" series gameplay. The player can choose to control either Sonic the Hedgehog or Tails as they venture to protect the powerful Chaos Emeralds from others. Sonic and Tails can use items strewn across the stages, and differences in their abilities make for different gameplay experiences when playing as each character.