Big Arm (Classic Sonic's world)

Launch Base is a zone that appears on the Nintendo 3DS version of Sonic Generations, where Classic Sonic faces Big Arm, the boss of the Classic Era. It is a remake of Launch Base Zone in Sonic the Hedgehog 3.

Big Arm has two phases. On its first phase, it'll try to crush Sonic with it's hands and it'll also use its rockets to dash. Once Big Arm has received 4 hits, it'll go into phase 2, where it grows spikes on its arms. In this phase, Big Arm will try to grab Sonic and throw him. Big Arm will also try to punch Sonic from the edges and center of the arena. Big Arm is defeated after 8 hits.

Missions

 * 1-Ring Boss: Defeat Big Arm in 3:00:00 with only 1 ring!

Videos
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Trivia

 * On the original E3 demo, Big Arm had a remix of the Doomsday Zone theme, but it was changed by Gamescom to the correct remix.
 * This is the very first boss stage for Generations ever confirmed by SEGA.
 * Big Arm can take twice the amount of hits the Death Egg Robot can, although Big Arm is a more simple battle than the Death Egg Robot.