| Aka: | Sonic World Adventure (Japan) |
| Console: | Microsoft Xbox 360 |
| TV Standard: | Region Not Set |
| Developer(s): | Sonic Team |
| Publisher(s): | Sega |
| Release Date: | 2008-11-18 |
| Players: | 1 |
| Co-op: | No |
| ESRB: | E10+ - Everyone 10+ |
| Type: | Action, Adventure |
Gameplay in Sonic Unleashed focuses on two modes of platforming play: fast-paced levels that take place during daytime, showcasing Sonic's trademark speed as seen in previous games in the series, and slower, night-time levels, during which Sonic's Werehog form emerges, and gameplay switches to an action-based, brawler style of play, in which Sonic battles Gaia enemies
