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UBB

Undertale Boss Battles

by NyzurierActionBattlegrounds & Fighting
Play on Roblox ↗
Players online · live— last hour
Checked 17 h ago · updates about every minute
Day range
5 – 13
24 h average
9
High since tracking
138 Nov 2026
Lifetime visits
19.7M
Favorites
110.4K
Likes
83.4%50.3K votes
Server size
10
Listed
12 Feb 2019
Last update
24 Jun 2023
+160% over the day
369121512:0016:0020:0000:00

Times in UTC · tracked since 8 Nov 2026 · U = update published

News

updates and their effect

No updates since tracking started (8 Nov 2026). Last update before that: 24 Jun 2023.

About

Fight the Undertale cast and various fan made AU and AT characters in this Undertale based game. You can either fight alone or with your friends to progress together, the choice is yours. Shutdown = Update/Fixes Credits to Toby and Temmie for Undertale. Credits to Toby and his entire team for Deltarune. Credits to all the creators of the various fan made characters in this game. Credits to all of the composers who’s music is in this game.

Action peers

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