This Sonic the Hedgehog Flash online game is 1.03 MB in size, so please allow some time for it to load...
There is a mild adult theme at the end of this game for comic effect, but it is still family-friendly despite that.
Sonic the Hedgehog is lost in the world of Super Mario. Help him escape by defeating Mario. Use the Cursor Left and Right keys (Arrow keys) to move Sonic, the "A" key to jump, and the "Z" key to throw mushrooms.
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