Sonic Gems Collection is a compilation of nine games and two unlockables that is released for the Nintendo GameCube and PlayStation 2 (Japan and Europe). Most of the games are Sega Game Gear versions, with the rest being games that were adapted from the PC or arcade.
This compilation was released in 2005.
- Sonic CD (computer port)
- Sonic Drift 2 (Game Gear)
- Sonic the Hedgehog 2 (Game Gear)
- Sonic the Hedgehog Triple Trouble (Game Gear)
- Sonic R (computer port)
- Sonic the Fighters (Arcade)
- Sonic Spinball (Game Gear)
- Tails' Skypatrol (Game Gear)
- Tails Adventure (Game Gear)
- Sonic the Hedgehog The Screen Saver (A part of the museum)
Unlockable games in America and Europe:
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)
In the Museum, a number of classic Sonic games can be unlocked. When selected, the player starts on the game's final Boss and has a time limit. If the player wins the game under the time limit, they can continue playing from the beginning of the game until the time runs out.
- Sonic the Hedgehog (16-bit)
- Sonic the Hedgehog 2 (16-bit)
- Sonic the Hedgehog 3
- Sonic & Knuckles
- Sonic 3D Blast
- Sonic the Hedgehog 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)
- Knuckles' Chaotix
- SegaSonic the Hedgehog
- Sonic Eraser
- Wonder Boy III: Monster Lair
- Monster World IV
- Wonder Boy V: Monster World III
Sonic Gems includes a museum of unlockable content such as artwork, videos, music tracks and game demos (listed above).
- Artwork from Sonic the Hedgehog CD
- Artwork from Sonic the Fighters
- Artwork from Sonic R
- All of the images featured in Sonic the Hedgehog The Screen Saver
- Artwork from Knuckles' Chaotix
- Screenshots of Sonic Adventure DX: Director's Cut
- Screenshots of Sonic Adventure 2 Battle
- Screenshots of Sonic Heroes
- Modern character artwork
- Promotional holiday artwork
- Photos of Japanese Sonic arcades such as Waku Waku Sonic Patrol Car
- Original concept art.
- Sonic Gems original artwork
- Gems Museum (Theme)
- Are You Brave?
- Fairy Of A.I.F.
- Sonic 6290 Mix
- Sonic After-6290 Mix
- Sonic Boom D'nB Mix
- Can You Feel The Sunshine ACID Mix
- Living In The City LTN Mix
- Sonic Goes UG Mix
- Sonic 3 MegaD Mix
- Open Your Heart MJZ Mix
- Sonic Heroes No-GTR Mix
- Sonic Heroes teaser Video
- Sonic History Video
- Sonic Adventure intro. video
- A PlayStation 2 version was released in Japan and Europe, but the US version was never released for unknown reasons. The PS2 version is also region-locked so that it plays the original soundtrack of Sonic the Hedgehog CD on a Japanese system; if it detects another region (even European), it defaults to the American soundtrack, and there is no in-game music selection. This is not the case for the GameCube release, which may have been done to save space. However, the version of Sonic R in the GCN release supports four-players, which was reduced to two on PS2.
- Rumors began to spread about the possibility that Knuckles' Chaotix was going to be in this game but the idea was later scrapped. A remnant of the idea is present in the form of an art gallery dedicated to it.
- SegaSonic the Hedgehog
- Sonic Eraser was also initially planned, but did not for unknown reasons. Also, three Mega Drive games from the Wonder Boy Series were also planned, but did not for unknown reasons.
- It is interesting to note that two of the games not included (Sonic Eraser and Monster World IV) have a different color for the "MD" Symbol (The original "MD" is pink\purple, while the other is orange\red). No one knows for sure why they have different colors, but some people believe it's because Sonic Eraser and Monster World IV were only released in Japan.
- 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-6290 Mix.
- In the United Kingdom, this was the first Sonic game with the rating of "U" meaning Universal.
- A few characters make cameos in the game, such as E-123 Omega and Cream.
- This is the second game that Metal Sonic was on the cover. The first was Sonic CD, the third being Sonic Rivals 2, and the fourth was the DS version of Mario & Sonic at the Olympic Winter Games.
- Vectorman 1 & 2, Streets of Rage 1-3, and Bonzana Bros. are the only non-Sonic games in the collection.
- The song Sonic 3 MegaD Mix (from the museum) was lucky enough to make it in the album, True Colors: The Best of Sonic The Hedgehog Part 2, unedited.