Facing Demons: Chara Battle

Story & Setting

Jump into the aftermath of a Genocide Run in this intense bullet‑hell fan‑made adventure based on the Undertale universe. After defeating every monster in the Underground, Chara returns for a final reckoning—drawing you into a chilling alternate‑universe duel packed with emotion and suspense .

Multi‑Phase Mayhem

Brace yourself for a fight spread across three brutal phases, featuring more than 40 unique attack patterns that keep you dodging, weaving, and strategizing .

Appearances by Fallen Allies

As the battle heats up, familiar faces from the Underground make return appearances as vengeful spirits. Expect surprise wave attacks that flip the battlefield on its head.

More Than Just Battles

Track your journey with 12 achievements to unlock, and explore multiple endings—including a haunting “Mercy” or ruthless “Genocide” finale. Discover which path suits your playstyle.

Why You'll Love It

• Fast‑paced action that keeps you on your toes


• Thought‑provoking narrative tied to your past choices


• A playground for bullet‑hell fans who crave a real challenge

Play Now in Your Browser

No download required—just hit “Play” and dive into the final confrontation. Sharpen your reflexes, hold your nerve, and find out whether mercy can conquer—or evil prevails.