Sonic Gems Collection

Sonic Gems Collection is a GameCube and PlayStation 2 (Japan and Europe only) collection of nine games and two unlockables. Most of the games are Game Gear versions, with the rest being games that were adapted from the PC or arcade.

The games included are:
 * Sonic CD (European/American computer port)
 * Sonic Drift 2 (Game Gear)
 * Sonic the Hedgehog 2 (Game Gear)
 * Sonic the Hedgehog: Triple Trouble (Game Gear)
 * Sonic R (Sega Saturn)
 * Sonic the Fighters (Arcade)
 * Sonic Spinball (Game Gear)
 * Tails' Skypatrol (Game Gear)
 * Tails Adventure (Game Gear)

Unlockable games in America and Europe:
 * Vectorman
 * Vectorman 2

Unlockable games in Japan:
 * Bonanza Bros.
 * Bare Knuckle (Streets of Rage)
 * Bare Knuckle II (Streets of Rage 2)
 * Bare Knuckle III (Streets of Rage 3)

Unlockable Demos:

In the Museum you can unlock a number of classic Sonic games. When selected you start on the game's final Boss and have a time limit. If you win the game under the time limit you can continue playing from the beginning of the game until your time runs out.

Genesis Games
 * Sonic the Hedgehog (16-bit)
 * Sonic the Hedgehog 2 (16-bit)
 * Sonic the Hedgehog 3
 * Sonic and Knuckles
 * Sonic 3D Blast
 * Sonic Spinball (16 bit)
 * Dr. Robotnik's Mean Bean Machine (16 bit)

Game Gear Games
 * Sonic the Hedgehog (8-bit)
 * Sonic Chaos
 * Sonic Blast
 * Sonic Labyrinth
 * Sonic Drift
 * Dr. Robotnik's Mean Bean Machine (8-bit)

Planned games:
 * Knuckles Chaotix
 * SegaSonic the Hedgehog

Trivia

 * Toot Toot Sonic Warrior was never officially released in America because of Sonic CD's music being remade and used for every US version. However, the original chorus for the words "Toot Toot Sonic" appear in museum mix Sonic After-3290 Mix.
 * Rumors began to spread about the possibility that Knuckles Chaotix was going to be in this game but the idea was later scrapped.
 * In the United Kingdom this was the first Sonic game with the rating of "U" meaning Universal.
 * There's cameos of characters here, such as E-123 Omega and Cream, and notes that the game is made after Sonic Heroes.
 * This makes the final game the auditioned Sonic Team characters voiced for counting the unlockable videos (not counting Deem Bristow as Eggman in Sonic Riders: Zero Gravity).
 * This is the second game that Metal Sonic was on the cover. The first was Sonic CD and the third being Sonic Rivals 2.
 * Vectorman 1 &amp; 2, Streets of Rage 1-3 &amp; Bonzana Bros are only non Sonic games in the collection.