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Size Beam

Sonic struck by the beam as it alters his size.

The Size Beam is a gimmick that first appears in Sonic the Hedgehog CD. They are size-altering machines found on Little Planet.


The Size Beams are usually fitted in corridors to shoot lasers down towards the ground. If the playable characters are caught in the beam, it will alter their size. The red lasers cause the playable character to become ⅔ of his original size. This will allow the playable character to run through corridors otherwise too narrow to pass though. The white lasers will cause the playable character to return to their default size.

Game appearances

Sonic the Hedgehog CD

Mini sonic

In Sonic the Hedgehog CD, the Size Beam generators appear exclusively in Metallic Madness.

Sonic Mania

SMChibiSonicSprite SMChibiTailsSprite SMChibiKnucklesSprite
MiniMighty MiniRay

In Sonic Mania, and its expansion Sonic Mania Plus, the Size Beam generators appear exclusively in Metallic Madness Zone. They also play a significant role for the boss fight in Metallic Madness Zone Act 2; before fight, the player has to pass through a Size Beam, forcing the playable character to face the boss as their miniaturized selves.

In other media

Sonic the Comic


Sonic encouraging Sonic into the Size Beam.

In Sonic the Comic #27, a midget version of Sonic from the near future encouraged Sonic into a Size Beam to make him small as well. This was done so that Sonic would be able to infiltrate a machine in the Miracle Planet's past to disable it and prevent it from turning the planet into a mechanical wasteland.

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