Sonic Adventure 2

Sonic Adventure 2, a 2001 platformer from Sonic Team USA and Sega, launched on the Dreamcast. The game splits its story into two opposing campaigns: one where Sonic, Tails, and Knuckles fight to protect the world, and another where Shadow, Doctor Eggman, and Rouge try to take it over. This was the last Sonic title for a Sega console, arriving just after Sega stopped supporting the Dreamcast. A GameCube port, called Sonic Adventure 2 Battle, followed later that year, marking the franchise’s first appearance on a Nintendo system.

The gameplay divides into three distinct styles. Sonic and Shadow’s levels are fast, focusing on platforming, homing attacks on enemy robots, and rail grinding. Tails and Eggman pilot mechs for slower, third-person shooting, with limited jumping and hovering. Knuckles and Rouge explore open areas to hunt for three Master Emerald shards, using a radar and clues from harmless robots; they can glide, fight with punches and kicks, and dig into walls for power-ups. Rings serve as health: getting hit while holding rings scatters them, while a hit without rings costs a life. Tails and Eggman have health bars that rings slowly refill. Permanent upgrades grant new moves, like a ring-dash for Sonic and Shadow, hover jets for Tails and Eggman, and digging for Knuckles and Rouge.

Outside the main story, players can raise Chao, virtual pets with five stats and a moral scale from Hero to Dark. Feeding them Chaos Drives or small animals from stages boosts their abilities for karate and racing minigames. Their alignment shifts based on which characters they bond with; a Chao that likes Tails becomes more heroic. Once fully Hero or Dark, the change is permanent. Chao can eventually die, but if given enough care, they may reincarnate.

Development began after the 1998 *Sonic Adventure*, when Sonic Team downsized and a portion moved to San Francisco to form Sonic Team USA. Takashi Iizuka directed, Yuji Naka produced, and the team worked for a year and a half. With a much smaller crew than the first game, they streamlined the design for faster, more action-heavy play, giving each character roughly equal screen time. Levels drew inspiration from American locations like San Francisco and Yosemite National Park.