SEGA's just released a stack of new Sonic Generations screenshots ahead of its mascot's first 3DS first appearance this week, showing off the odd stage, boss and WiFi multiplayer too.

While we won't spoil the stages or bosses — not that they're new, what with Generations being a compilation of Sonic's best bits and all — we can say the game's online multiplayer pits two Sonics against each other in a race to the goal. Your rival Sonic is portrayed on the top screen by a medal marker rather than a fully animated model, with a progress bar on the touch screen showing overall standings.

Sonic Generations is out tomorrow in North America and Friday in Europe.