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Yet again Sonic and friends find themselves wrapped up in the schemes of Dr. Robotnik. This time he plans to exploit the power of Chaos, a malevolent being that feeds upon the power of the Chaos Emeralds. In their own way, five heroes will do what they can to save Station Square and, perhaps, the entire world.

The player can select from which character to play after meeting them with Sonic, and each has its own unique version of each level. Sonic's levels involve racing through a level as quickly as possible, destroying any robots along the way. Tails can hover over distances, and his levels are similar to Sonic's except that he must beat an opponent to the finish line. Amy can't charge up ramps or run as quickly as Sonic and Tails, but she does have a giant hammer she can break obstacles with. The goal of her levels is to avoid being captured by a robot sent after her by Dr. Robotnik. E102 Gamma is a slow, difficult to maneuver robot, but it has guns and missiles that can lock on to several targets at once, chaining together attacks and earning a higher score and more time on the clock. The goal of its levels is to reach a boss enemy and destroy it before time runs out. The final character is Big the Cat, a fisherman searching for his lost frog. Big's levels are almost entirely devoid of action or fighting; he just fishes. Each character can find items that increase their abilities as the story progresses, such as a ring for Sonic that lets him home along lines of rings, or improved lures for Big. A final chapter wrapping up the story is unlocked after all other characters have been completed.

Additionally, each of the characters can visit the Chao garden where they can raise baby Chaos. By petting, feeding, and showing animals found in levels to the Chaos they can grow stronger, and optionally be put into races against other Chaos. As well each level in the game has additional objectives that can be completed to acquire extra emblems, although the emblems don't do anything in this version of the game. Finally, at one time it was possible to go online and download additional levels and bonuses in the game, such as a Christmas theme for Station Square and a level sponsored by AT&T, but since SegaNet shut down this is no longer possible.


Sonic Adventure Dreamcast High in the Air
Sonic Adventure Xbox 360 Loading Screen
Sonic Adventure Dreamcast Loop
Sonic Adventure Xbox 360 Title Screen

Promo Images

Sonic Adventure Concept Art
Sonic Adventure Concept Art
Sonic Adventure Magazine Advertisement
Sonic Adventure Concept Art

Alternate Titles

  • "索尼克大冒险" -- Chinese spelling (simplified)
  • "Sonic Adventure International" -- Updated Edition title
  • "ソニック アドベンチャー" -- Japanese spelling

Part of the Following Groups

User Reviews

Sonic's Glorious Return! Dreamcast Classic Nigel (150)
Simply an amazing "killer app". Dreamcast A O (74)
The First Adventure ... Begins Dreamcast Rouge (7)
Without a doubt, the best game I ever played! Dreamcast M.Allen (88)
The game that introduced me to the Sonic world Dreamcast BlueWind SSK (30)
Could have been great, but... Dreamcast optrirominiluikus (118)
The best Sonic game since S&K. Dreamcast Gary Smith (65)
A classical title, that I will always remember. Dreamcast Kluke (8)

Critic Reviews / Dreamcast Mar 17, 2006 92 out of 100 92
GameSpot Dreamcast Dec 31, 1998 9.2 out of 10 92
Planet Dreamcast Dreamcast Oct 03, 1999 9 out of 10 90
neXGam Dreamcast 1999 9 out of 10 90
Meristation Dreamcast Sep 17, 1999 9 out of 10 90
Defunct Games Dreamcast Dec 12, 2004 80 out of 100 80
Xboxygen Xbox 360 Sep 30, 2010 4 Stars4 Stars4 Stars4 Stars4 Stars 80
Softpedia Xbox 360 Apr 01, 2011 7 out of 10 70
PlayStation Official Magazine - UK PlayStation 3 Dec, 2010 4 out of 10 40
IGN PlayStation 3 Sep 14, 2010 3.5 out of 10 35


Topic # Posts Last Post
PS3 / Xbox 360 versions 3 Freeman (65660)
Apr 03, 2018


At the Sonic Adventure conference in 1998, pamphlets were passed out advertising it. One of the pictures showed a screenshot from the first Sky Chase minigame, which included a dragon attacking the Tornado. This dragon never made it into Sky Chase (nor anywhere else) in the final game. The dragon did in fact make it into another Sonic game. In 2003 it was used as the final boss for "Sonic Heroes".

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Contributed to by Riemann80 (19633), Grant McLellan (622) and Crawly (1415)
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