Secret
Undertale features many secrets. You may be looking for:
- Genocide Route, a route that is hard to stumble across.
- Hard Mode, an unfinished harder difficulty.
- True Lab, an area only accessible in the True Pacifist Route
- Mysterious door, an area only accessible if no True Pacifist ending credits backer names are touched.
- Glyde, a hidden enemy.
- So Sorry, an optional boss.
- W.D. Gaster, a character only alluded to in random events; his appearance is currently unknown. Undertale's follow up, Deltarune, alludes to him in many ways.
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