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UNDERTALE WIKI

Genocide Route

Severe spoiler warning. The Genocide Route (also called the No Mercy path by players) demands systematically defeating every monster in each area until encounters stop. It is intentionally bleak, mechanically strict, and designed to feel wrong.

What to know

  • You must clear EXP quotas per region; leaving early voids the route.
  • Some characters react differently; some fights become skill walls on purpose.
  • This wiki documents the route for completeness. You do not need it for a first playthrough.

If patterns overwhelm you, confirm you cleared each region completely and that you did not spare anyone who breaks the flag. Hub: Endings.