UNDERSYNC

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Comments (15)

What do you think?

WİLLAM AFTON @IhsantalhaEkici

İts look like niceee :)))

Zeta (TacticalBlueJay) @TacticalBlueJay

You have my interest. Seems like a great concept, and I'm excited to see where this goes.

Danielmendes1_d849 @Danielmendes1_d849

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

Game Soundtrack

51 songs

001 Once Upon a Time

1.001 Once Upon a Time
2.002 Start Menu
3.003 Old Ruins
4.004 FIGHT
5.005 Dreamscape
6.006 Homesickness
7.007 Fluffy Party
8.008 Hotel
9.009 Store
10.010 Hoverhood
11.011 Muffins & Monsoons
12.012 Junnah Home
13.013 DETERMINATION Stands Still
14.014 Loop of a Loop of a Loop
15.015 Below the Lightline
16.016 Blind Verdict
17.017 Dagger Waltz
18.018 Black Thread Beat
19.019 Liquor & Laughter
20.020 Stillness
21.021 Frostlight
22.022 Moon
23.023 MoonDrop
24.024 Starstray
25.025 Wax Heart
26.026 Kindness Burns
27.027 Candle Cove
28.028 Misplaced
29.029 Secret Index
30.030 Certified Trash
31.031 Color me Loud
32.032 Stirring he Noize
33.033 Killer Punchline
34.034 Pitch Perfect Chaos
35.035 Now you see RGB
36.036 Forecast Mayhem
37.037 Groove over loose
38.038 404_SoulNotFound_1
39.039 Thread Count Zero
40.040 PatternBreak
41.041 Black Crown
42.042 Heartline Pressure
43.043 Bravery Protocol
44.044 Healing Conduit
45.045 Violet Core
46.046 Cognition Unveiled
47.047 Memories
48.048 END_DATA
49.049 Last Tear
50.050 Alone
51.051 Heartless

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