Having opened a detective agency since their first adventure, they take on a mysterious client and investigate Dr. Team Chaotix, consisting of Espio, Charmy, and Vector from the titular 1995 game.

Their levels are designed to be the easiest with short length, low enemy count, and generous Power-Up distribution.

Team Rose, consisting of Amy (stalking Sonic yet again), Big the Cat (wants to find his friend Froggy, who's missing again), and Cream the Rabbit (wants to reunite her friend Cheese with his brother).

Their levels tend to be the longest and hardest, teeming with the most enemies. Eggman and decides to help him), and Omega (successor to Sonic Adventure's Gamma with a similar sense of independence).

Team Dark, consisting of Shadow (amnesiac and seeking answers), Rouge (found Shadow when trying to steal some treasure from Dr.

Their levels are squarely in the middle difficulty-wise.

Team Sonic, consisting of Sonic, Tails, and Knuckles.

Each formation can be immediately switched with the press of a button.

Each team has a Speed, Power, and Flight character with an associated formation.

Its primary gameplay gimmick is teamwork, and as such the story focuses on four teams of three: Team Sonic, Team Dark, Team Rose, and Team Chaotix. It's notable for being the first Sonic game to be Multi-Platform, having releases on all three sixth generation consoles prior to this, Sega had quit making consoles and ported several re-releases of older games to the Nintendo GameCube and new games exclusive to the Game Boy Advance (the Sonic Advance trilogy).

Sonic Heroes is an entry in Sonic the Hedgehog series which was released at the end of 2003.

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