Sonic Adventure DX
Released Mar 2011
An ancient evil lurking within the Master Emerald has been unleashed from its slumber by the devious Dr. Eggman and is on the verge of becoming the ultimate monster using the 7 Chaos Emeralds. Only Sonic and his friends are heroic enough to put a stop to Dr. Eggman and his evil minions.
91% positive · 19K reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam Lowest $3.99 $7.99 −50% Green Man Gaming Steam key $7.99
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Evaluation
Sonic Adventure DX is a re-release of the 2003 Dreamcast/GameCube title, brought to Steam on March 4, 2011. It launched as a complete, self-contained game with no post-launch content cycle. The only developer activity after launch was a single maintenance patch on September 16, 2014, which added technical improvements such as Steam Achievements, v-sync, FXAA, higher resolution support, and improved controller/keyboard options. There has been no developer communication of any kind since that patch — now well over a decade ago. No DLC has ever been listed, no roadmap or future content has been announced, and the store description describes only the base game's features. This is a finished product that shipped complete and has received no content updates beyond technical maintenance.
Evidence
Store description outlines the base game's features — six playable characters and Chao Garden — with no mention of DLC, expansions, or ongoing updates.
A technical maintenance patch added Steam Achievements, v-sync, FXAA, higher resolution support, and improved input options. This is the last and only developer communication on record.
Media
Details
Developer
Publisher
SEGA
Achievements
15
Platform
Windows
Controller
full support
Steam Deck
Unsupported
Players
Single-player
About this game
An ancient evil lurking within the Master Emerald has been unleashed from its slumber by the devious Dr. Eggman and is on the verge of becoming the ultimate monster using the 7 Chaos Emeralds. Only Sonic and his friends are heroic enough to put a stop to Dr. Eggman and his evil minions. Hit the ground running in this classic epic adventure in a race against time to save the world!
Features
Six Characters, Six Adventures- Play through as one of six different characters, including Sonic, Tails, Knuckles, and Amy, each with their own unique adventure and story.
- Breed and nurture your very own pet Chao in the Chao Garden minigame. Then compete against other Chao in a battle for ultimate Chao supremacy.
Are these done yet?
Last evaluated Jun 28, 2026
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