A simple alternate universe of undertale where the role of all the characters are swapped thus making it very weird and fun to play. It defies the logic of gaming.
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Alfred: Hey, do u know about underswap?
Larry: That game is an insult to logic.
Alfred: Alright, screw off normie bastard.
You don't know what exactly an au is.
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Alfred: Hey, do u know about underswap?
Larry: That game is an insult to logic.
Alfred: Alright, screw off normie bastard.
You don't know what exactly an au is.
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by Retardost December 13, 2021
Get the Underswapmug.