Sonic Adventure 2: Battle delivers a high-speed, split-narrative thrill ride with Sonic, Shadow, and friends. Its action levels are blazingly fast and packed with spectacle, while the treasure-hunting and mech-shooting stages offer a change of pace. The Chao Garden provides a surprisingly addictive side activity for those who enjoy raising virtual pets. Though the camera can be occasionally unruly and some levels are less polished than others, Sonic Adventure 2: Battle remains an energetic and surprisingly diverse blast from the past.