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Sonic Adventure 1+2
Property of Teh Doomed Ninja-SA1 2 Box!
Developer(s) Sega
Publisher(s) Doom Ninjaz
Platform(s) Sega Galaxy
Release Date(s)
June 23rd 2009
Single player, Multiplayer, Online
Age Rating(s)
Genre(s) Video Game Compilation
Media Included Sega Galaxy Optical Disc

Sonic Adventure 1+2 (ソニックアドベンチャ1+2 Sonikku Adobencha 1+2) is a video game compilation developed by Sega that comes packaged with the Sega Galaxy video game system. The game includes ported versions of Sonic Adventure and Sonic Adventure 2 as well as many new bonus features and unlockable mini-games.


The game is a basic compilation of Sonic Adventure and Sonic Adventure 2. The games are 70% the same from their Dreamcast versions, differences being fixed glitches, major graphical touchups, higher resolution in-game textures, online achievements, and the addition of online multiplayer for Sonic Adventure 2. In the "Bonus" section of the game, players can view concept artwork and view hints and guides.

Rather than using Sonic Adventure DX and Sonic Adventure 2 Battle for reference, the games are digitally remastered in HD from the ground-up.


  • The title of the game is pronounced "Sonic Adventure 1 and 2", not "Sonic Adventure 1 plus 2".