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What do you think?

İts look like niceee :)))

Will we have monster companions to help us with puzzles and combat on the pacifist route?

Welcome to UNDERSYNC!
A completely free Undertale fangame with a fresh aesthetic, original characters, and a story that explores one of the greatest mysteries of the original game: W.D. Gaster.

UNDERSYNC is all about YOU.

Yes, YOU—the player.
Your choices don’t just affect the story… they shape who you are.

The game features a unique system of “Soul Values” that are built based on your actions and words, like a real-time personality test… but with real consequences.

There are 16 different SOULS, each with their own worldview, mechanics, and ending.
The original 7… and 9 entirely new ones. Which one will you become?

But wait—there’s more:
You’ll have to manage your SOUL’s sanity, think carefully about your path, your words, your fights, and your personality.
It’s not just which route you take… but how you take it.

UNDERSYNC features:

  • 🎵 Original music to make every battle unforgettable.

  • 🧩 Unique and emotional new gameplay mechanics.

  • 🎭 Inspired and quirky characters.

  • 🧠 A mysterious plot with a dark past.

  • 😭 Endings that’ll make you laugh, cry… or rage.

  • 💥 Battles ranging from ridiculously easy to painfully hard.

Can you keep your sanity in the middle of chaos?
Find out in UNDERSYNC!
We’ll keep you posted with updates! #fangame #undertale #action #rpg #puzzle #strategy



teen
Cartoon Violence
Intense Fantasy Violence
Realistic Violence
Realistic Bloodshed
Alcohol Reference
Drug Reference
Mild Language
Crass Humor
Simulated Gambling

Soon, you'll dive into a world full of puzzles, choices, and bizarre adventures.

The demo features just 2 areas from the full game—but enough to make you wonder:

“What the heck is going on here...?”

Coming soon! Stay synced!