Bosses

Error Sans

Spawn waterfall farm with a disputed reset gate.

Error Sans in Unwavering Soul

Error Sans: Spawn waterfall farm with a disputed reset gate. Get it by Second waterfall on the right at spawn. Try after at least one reset, and expect a second reset if the fight stays locked. Use it to Use him between levels 200 and 305 once the gate lets you in.

What is Error Sans?

Spawn waterfall fight used to bridge levels 200 to 305. The reset gate changed in public notes: a version 11.2 creator comment says Error Sans became reset 2, matching the secrets list. A November 2026 EXP route still says reset 1.

Published facts

Error Sans facts
FactValue
NameError Sans
LocationSpawn waterfall

How do you get Error Sans?

Second waterfall on the right at spawn. Try after at least one reset, and expect a second reset if the fight stays locked.

How do you use Error Sans?

Use him between levels 200 and 305 once the gate lets you in.

FAQ

Error Sans questions

What version is listed on the Roblox page?

The Roblox games record, updated October 29, 2026, lists game version 12.4. The description says the experience is based on Undertale by Toby, names creator YaoYN, and links the YN Studio group. That record does not include an itemized patch note.

What do you need for a standard reset?

Two public descriptions disagree. A game reference says the barrier's final room accepts a reset at level 6000 with 70 TP, then wipes level and TP and applies a level booster that can stack to 34 percent. A November 2026 walkthrough instead says level 6000, 100 TP, and a gold fee, and that weapons stay. Check the barrier prompt on your save before you spend the run.

How do you redeem a code?

Open Menu at the top right, then Settings, type the code into the box labeled Code here, and press Redeem code. Current code lists say the account must be in the YN Studio group. Codes are reported as case sensitive and single-use per account.

Where do skills come from?

Community guides say you need level 6000, then spend 100 Kromer per spin at Ralsei's Skill Awakening Workshop in Castle Town. Upgrading a skill you already have is described as another 200 Kromer. The Extra capacity pass adds 18 skill-storage slots.