A Relentless Fan-Made Showdown
Undertale: Last Breath (ULB) is a fan-made bullet hell boss battle based on a genocide timeline where Sans gives it everything he has left. Inspired by the original Undertale, this game throws players into an epic final fight full of twists, emotional dialogue, and raw difficulty.
Developed by Team Last Breath, it features original attacks, intense music, and phase-based combat that’s more cinematic and unforgiving than the original game. It’s a love letter to Sans—and a challenge to every fan’s reflexes.
Gameplay – Phases, Healing, and Pure Pain
Phase-Based Bullet Hell
- Survive multiple combat phases (often 3–6), each introducing new patterns and escalating difficulty.
- Face increasingly complex bullet hell attacks, from spinning bones to Gaster Blasters to screen-shaking chaos.
- Test your memory, precision, and endurance like never before.
Controls and Features
- Arrow keys move your red soul to dodge incoming attacks.
- Z to heal—limited-use, so time it wisely.
- X (in some versions) slows movement for finer control.
- Subtitles help follow Sans’ emotional lines in battle.
Visual Warnings
The game includes flashing lights and fast motion, so photosensitive players should proceed with caution. Some versions also include Legacy Editions with original soundtracks and refined effects.
Similar Games – Hardcore Fans Might Also Like
If ULB got your heart pounding, try these next:
- Dusttale – Another genocide route twist with story-rich Sans battles.
- Undertale: Last Breath Reborn – A remake with new animations and difficulty tweaks.
- Megalomaniac Sans Fight – Glitchtale-inspired, shorter but still intense.
- OMORI Boss Mods – Fan fights in a different yet equally emotional universe.
- Touhou Series – The bullet hell gold standard for training your reflexes.
If you think you've mastered Sans in the original game, Undertale: Last Breath is here to humble you. One fight. One breath. One last chance to survive.