UnderBattles - AU Fights

1.9

KYwoo

3.65

1,079 reviews

100,000+
Downloads

Free

A game that includes many kind of Undertale fangames from many AUs!

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Download from Google Play

Pros & Cons

Diverse Undertale AU battles in a single fan-driven app
Completely free-to-play with no paywalls
Explicit IP and copyright transparency with direct contact
Ongoing development signal through the planned REMASTERED update

Not officially affiliated with Undertale or Toby Fox
Not ranked in any top list, which may affect discovery
Content quality may vary as a fan-made project

About UnderBattles - AU Fights

UnderBattles - AU Fights is a role playing app developed by KYwoo.

Download Statistics

UnderBattles - AU Fights has been downloaded 200 thousand times. In the last 30 days, the app was downloaded 9 thousand times.

User Ratings

UnderBattles - AU Fights is rated 3.65 out of 5 stars. The rating is based on 1.1 thousand ratings.

App Information

UnderBattles - AU Fights is FREE to download. The APK download size is 49.01 MB. The latest version available is 1.9. The last update was on July 18, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play September 2024.

Description

This is a completely free to play fan-made unofficial project based on the original Undertale™ game created by Toby Fox.

More data about UnderBattles - AU Fights

Price	Free to download
Total downloads	200 thousand
Recent downloads	9 thousand
Rating	3.65 based on 1.1 thousand ratings
Ranking	Not ranked
Version	1.9
APK size	49.0 MB
Number of libraries	?
Suitable for	Everyone
Ads	Contains ads

App Performance Report

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Alternative downloads for the UnderBattles - AU Fights app

UnderBattles - AU Fights compared with similar apps

Common keywords of similar apps

Kind Fangames Fan Toby Fox Undertale Game Made

Keywords missing from this app

Https Recent Neogeo Games App Play Features Snk Fighting Fight Unique Characters Free Battles Players Supreme Duelist Bug Masterpiece Online Version World Fixes Friends Fixed Aca Hamster Corporation Series Character Team Stickers Battle Modes Fix Time Create Difficulty Settings Quick Official Mobile Composer Released Support Enjoy

Google Play Rating history and histogram

Rating history

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Downloads over time

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UnderBattles - AU Fights has been downloaded 200 thousand times. Over the past 30 days, it averaged 300 downloads per day.

Changelog of UnderBattles - AU Fights

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Developer information for KYwoo

KYwoo

kywoo0130@gmail.com

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Comments on UnderBattles - AU Fights for Android

★★★★★ Hollie Whitman · Apr 18, 2025

So good game, but can you please add lust sans to the game? I've always wanted to do the anxiety sans fight aside from that, it is one of my favorite games other than undertake and delta rune.🤎🧡💛💚💙💜

★★★★☆ Perly Grace Torrejas · Jan 15, 2025

It's a great game possibly the best Undertake fan game on play store but could you at least do a phase 1-2 on swap fell papyrus. And can you also add Undertake:disbelief papyrus it would be so great if you do that

★☆☆☆☆ Blake · Dec 27, 2024

Overall, when I install the game, random games get installed onto my phone, and the developer seems like the concept of respect is unseen, judging by these replies, other than that, good. (Add revenge the unseen ending, and I'll make this 5 star-)

★☆☆☆☆ Kendra Brown · Oct 25, 2024

Alright time to rewrite what my previous review was, the movement is actually janky I can't spin superfast like I can in other apps, also why isn't there a 'hacker mode' where you can mod (like your heath)also I had it on 30 fps, and I could run higher than that but the fact that I tried to actually see if it was me when it wasn't is crazy, but I hope this game gets better. Until then, it's just going to rot in my phone until an update sorry dev but your games. Movement really is bad

★★☆☆☆ KiKi Cat · Nov 11, 2025

The battles are pretty good, but they are extremely difficult to maneuver. And I like that the naming works the same as Undertake, like with Chara being the true name, and other characters' names not being allowed. HOWEVER! Gaster crashing the game is completely understandable (as it does that in Undertake & Delta rune), but River also crashes it!! IDK if it's a bug, a glitch or just some AU's rule, but please get rid of it. Thank you.

Google Play Rankings for UnderBattles - AU Fights

This app is not ranked

Technologies used by UnderBattles - AU Fights

13 permissions

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