✅ Last Updated: June 2026 | Verified this week
Sans AUs Fighter 2, also called SAF2, is a Roblox fighting game made by the group yuika shenanigans. It is inspired by Undertale and its many fan-made AUs, which are alternate universe versions of the characters, so you play as different Sans fighters and battle bosses, training dummies, and other players. Every fight earns EXP, and you spend EXP and Gold to unlock stronger Sans characters and new movesets.
Since its November 2024 launch the game has been played more than 7 million times, which makes it one of the more popular Sans fighting games on Roblox. This guide covers how to play, the basics of fighting and earning EXP, tips to win more matches, and an FAQ, with links to the codes and script pages at the bottom.
Sans AUs Fighter 2 Overview
| Sans AUs Fighter 2 Overview |
| Game Name |
Sans AUs Fighter 2 |
| Developer |
yuika shenanigans |
| Genre |
Fighting (Sans vs Sans) |
| Platform |
Roblox (PC, Mobile, Console) |
| Currency |
EXP and Gold |
| Visits |
7M+ |
| Max Players |
15 |
| Release |
November 2024 |
⚠️ Epilepsy warning: Sans AUs Fighter 2 uses flashing lights, strobe effects, and screen shakes during fights. If you are sensitive to flashing lights, play with care, lower your graphics quality, and take breaks. The developer recommends a graphics quality of 3 or higher and a keyboard and mouse.
How to Play Sans AUs Fighter 2
- Spawn in and pick a Sans character to fight as. New players start with the basic options and unlock more over time.
- Fight bosses and training dummies to earn EXP safely, then test yourself against other players when the lobby fills up.
- Learn your character’s moveset, since each Sans has its own attacks, dodges, and special moves that win fights.
- Spend your EXP and Gold to unlock stronger Sans fighters and new movesets as you level up.
- Redeem the latest codes for free EXP and Gold so you can unlock new characters faster.
Sans AUs Fighter 2 Gameplay and Unlocks
Sans AUs Fighter 2 is a fast Sans versus Sans fighter, so most of your time is spent in close combat. Each Sans character has its own set of attacks and a special moveset, and winning comes down to landing your hits, dodging at the right moment, and reading what your opponent does next. The game is best played with a keyboard and mouse, since timing your moves precisely is what separates a clean win from a loss.
EXP is the heart of how you get stronger. You earn it from beating bosses, clearing training dummies, and defeating other players, and public servers give a bonus to the EXP you collect. Once you have enough EXP and Gold, you spend it to unlock new Sans characters and movesets, which gives you more options and stronger fighters to bring into a match. That loop of fight, earn, and unlock is what keeps players coming back.
Matches run on 15-player servers, so there is usually a busy lobby with plenty of opponents to test yourself against. The game gets regular updates that add new Sans characters and reworks older ones, and the developer often hands out codes around those updates for free EXP and Gold. One thing to keep in mind is the epilepsy warning, since the fights use a lot of flashing lights and strobe effects, so play at a comfortable graphics setting and take breaks if you need them.
Tips for New Sans AUs Fighter 2 Players
- Stick with one Sans character at first and learn its full moveset, since knowing your combos beats switching fighters every match.
- Farm EXP on bosses and dummies when the lobby is quiet, then take what you learn into fights against real players.
- Play in public servers when you can, because the bonus EXP there helps you unlock new Sans characters much faster.
- Redeem every working code from our codes page for free EXP and Gold before you start grinding, so you get a head start.
- Lower your graphics quality if the flashing effects bother you, since the game has a strong epilepsy warning for its strobe effects.
Sans AUs Fighter 2 FAQ
What kind of game is Sans AUs Fighter 2?
Sans AUs Fighter 2, or SAF2, is a Sans versus Sans fighting game on Roblox by the group yuika shenanigans. It is inspired by Undertale and its fan-made AUs, so you fight as different Sans characters against bosses, dummies, and other players to earn EXP and unlock more fighters. It launched in November 2024 and has been played more than 7 million times.
Is Sans AUs Fighter 2 free to play?
Yes, Sans AUs Fighter 2 is free to play on Roblox. You can jump straight into a match without spending anything, and you earn EXP and Gold by playing. The game also has optional purchases, like EXP and Gold boosts, but you do not need them to play.
Does Sans AUs Fighter 2 have codes?
Yes, Sans AUs Fighter 2 has a working code system that rewards free EXP and Gold. You redeem them with the Codes button on the left of the screen. See the live, working list on the Sans AUs Fighter 2 Codes page.
Does Sans AUs Fighter 2 have an epilepsy warning?
Yes. Sans AUs Fighter 2 uses flashing lights, strobe effects, and screen shakes during fights, and the developer includes an epilepsy warning. If you are sensitive to flashing lights, play at a lower graphics quality, take breaks, and be careful before you start.
How many players are in Sans AUs Fighter 2?
Each server holds up to 15 players, so there is usually a busy lobby of opponents to fight. Public servers also give a bonus to the EXP you earn, which makes them a good place to grind out new Sans characters.