UNDERTALE Fight!
Roblox game · by Rhino's Studios
In this Roblox action game, you take on boss and monster fights drawn from UNDERTALE, DELTARUNE, and fan games. The developer says the enemies are 100% accurate to their sources. Each fight earns you a rank, and those ranks feed into leaderboards.
- 643playing now
- Oct 23first on the charts
- None yetactive codes
- 97%liked it
New Oct 23Codes
UNDERTALE Fight codes right now
Last checked
No codes for UNDERTALE Fight yet. The developer has not posted any in the game's description. We check it every 6 hours; last checked .
Gameplay
How UNDERTALE Fight works
UNDERTALE Fight lets you take on more than 50 boss and monster fights based on UNDERTALE, DELTARUNE, and other fan games. The developer says the enemies are 100% accurate to their sources.
Each fight is ranked, and your results feed into leaderboards, so the goal is to place well on every fight and climb higher than other players. You can also team up with friends in Party mode or play modes such as Endless, Daily Challenge, and 1v1s.
What sets the game apart is the range of enemies and the mix of solo and group play. Rare SOUL skins can be rolled for and shown off, which gives a reason to keep playing.
Modes
UNDERTALE Fight modes and maps
- Endless
A gamemode listed by the developer.
- Daily Challenge
A gamemode listed by the developer.
- 1v1s
A gamemode where two players face each other.
- Party mode
A group mode for teaming up with friends.
Dangers
UNDERTALE Fight monsters and threats
- Sans
One of the boss fights in the game. The description does not list his attacks.
- Undyne the Undying
One of the boss fights in the game. The description does not list her attacks.
- Papyrus
One of the boss fights in the game. The description does not list his attacks.
- Mettaton
One of the boss fights in the game. The description does not list his attacks.
- Muffet
One of the boss fights in the game. The description does not list her attacks.
- Asgore
One of the boss fights in the game. The description does not list his attacks.
- Jevil
One of the boss fights in the game. The description does not list his attacks.
- Decibat
One of the boss fights in the game. The description does not list its attacks.
Ending
How to win in UNDERTALE Fight
Every fight in the game is ranked. Your ranking on each fight counts toward the leaderboards, where you can compare your results with other players.
The game has 26 badges. The rarest, BAD TIME, has been earned by 0% of players (2 so far); 4 badges have been earned by more than half of them.
Tips
UNDERTALE Fight tips
- Team up with friends in Party mode.
- Try the Daily Challenge.
- Play 1v1s against other players.
- Roll for rare SOUL skins and show them off.
- Aim to climb the leaderboards by ranking well on every fight.
First steps
How to start in UNDERTALE Fight
Open the game on mobile, PC, or console.
Choose a fight from the 50+ boss and monster fights.
Play a fight and check your ranking.
Invite friends and start a Party mode session.
Players
Is UNDERTALE Fight popular right now?
643 people are playing UNDERTALE Fight right now.
The most we have counted in the game at once is 1,508, on Oct 23.
It first reached Roblox's Up-and-Coming chart on October 23, 2026, today, and its best position so far is #46.
97% of 3,659 player ratings are thumbs up, and the game has 241K visits in total.
Each server holds up to 16 players.
Not enough readings for a chart yet: we read the player count every 6 hours, and the line starts after a day. Right now: 643 players.
Community
UNDERTALE Fight Discord, group and community
The game is run by Rhino's Studios, a Roblox community with 6,268 members.
The game's description asks players to join it.
No Discord invite is written in the game's description. If the developer has a server, it is linked from the game's page on Roblox.
Store and badges
UNDERTALE Fight passes and badges
Game passes
It sells 10 game passes, from R$80 (AUTO) to R$699 (2X SEASON XP - FOREVER). Together they cost R$3,121. The game itself is free.
- AUTORolls for you automatically on the roll screen, in menus and during fights. (Also unlockable with 50,000 gold.)R$80
- AUTO-SELLPick a rarity on the roll screen and every soul you roll at or below it is sold for gold automatically. Keep new souls if you want. MYTHIC aR$99
- ROLL x10Roll 10 souls with one press!R$99
- INSTANTSkips spinning animations to roll at maximum speed.R$149
- EARLY ACCESSPlay new battles before everyone else. R$299
- LUCKY SOULx1.5 luck on every roll! With ULTRA LUCKY SOUL: x2.5.R$299
- Custom BattlesBuild your own battles in Custom Battles You can change your items, stats, and much more!R$299
- 2X GOLD FOREVERDouble gold from every source: fight wins, passive GOLD RATE, offline gold, duplicates and selling.R$449
- ULTRA LUCKY SOULx2 luck on every roll. With LUCKY SOUL: x2.5.R$649
- 2X SEASON XP - FOREVERDouble SOUL PASS XP forever!R$699
Badges
The game has 26 badges. The rarest, BAD TIME, has been earned by 0% of players (2 so far); 4 badges have been earned by more than half of them.
| Badge | Earned by | Rate |
|---|---|---|
| SEVEN HUMAN SOULSWin the daily challenge 7 days in a row. | 0 | 0% |
| BAD TIMEBeat Sans without getting hit. | 2 | 0% |
| DIRTY BROTHER KILLERBeat Sans with ONE HP on. | 3 | 0% |
| LEGEND OF THE UNDERGROUNDWin 500 fights. | 5 | 0% |
| THE ENDWin every fight. | 8 | 0% |
| THE UNDERGROUND'S FINESTBeat every boss. | 9 | 0% |
| TRY A LITTLE HARDERBeat Undyne the Undying without getting hit. | 33 | 0.1% |
| TRUE PACIFISTSpare every monster at least once. | 371 | 0.6% |
| IT NEVER ENDSReach wave 25 in endless mode. | 658 | 1.2% |
| CHAOS, CHAOS!Beat Jevil. | 1.1K | 2.1% |
| BIG SHOTBeat Spamton NEO. | 1.1K | 2.2% |
| INTERSTELLAR RETRIBUTIONBeat Disbelief Papyrus. | 1.8K | 2.9% |
Updates
UNDERTALE Fight updates and history
What the developer says changed, then what we saw happen to the game, newest first.
- Reached Roblox's Up-and-Coming for the first time.
- Created on Roblox by Rhino's Studios.
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UNDERTALE Fight Roblox questions
How do I get rare SOUL skins in UNDERTALE Fight?
You roll for rare SOUL skins in the game. Once you have them, you can show them off.
How do I climb the leaderboards in UNDERTALE Fight?
You get ranked on every fight, and those ranks are what move you up the leaderboards.
Can I play UNDERTALE Fight with friends?
Yes. You can team up with friends in Party mode.
Is UNDERTALE Fight on Roblox free?
Yes, it is free to play on Roblox. 10 optional game passes are for sale, from R$80.
How many people play UNDERTALE Fight?
643 at our last reading. The most we have counted at once is 1,508.
When did UNDERTALE Fight come out on Roblox?
It first reached Roblox's charts on October 23, 2026. The game was created on Roblox on October 14, 2026, before its public launch.
Does UNDERTALE Fight have a Discord server?
The game's description does not give a Discord invite. If Rhino's Studios runs a server, it is linked from the game's page on Roblox.
How do you join the UNDERTALE Fight group?
Open the Rhino's Studios community on Roblox and press Join Community. It has 6,268 members.