

Sync Or Sink
- 2+players
- PC
Trapped in a sinking submarine, two players must communicate through walkie-talkies to solve puzzles, complete tasks, navigate the depths, and escape before time runs out.
Who can play
Store (how we check facts)- Split-screen is not confirmed.
- Online on PC. How many can join is not confirmed.
- Free to play.
How it plays
Is it good
88%
Very positive on Steam
Every way to play together
Steam lists online co-op for PC. Free to play. Player counts are not confirmed yet. 88% positive of 180 Steam reviews.
- 2+
Quick facts
- Developer
- Low Effort Interactive
- Platforms
- PC
- Released
- Oct 1, 2025 on PC
- Early access
- Still in early access on Steam
- Languages
- Text in 1 language
In these lists
Answers
- Does Sync Or Sink have couch co-op?
- No same-screen play is confirmed. The Steam listing does not include it on PC. Online play is the way to play it together.
- Do you need two copies of Sync Or Sink?
- No. It's free to play.
- One of 1,371 co-op games where one copy is enough
- Is Sync Or Sink free?
- Yes, it's free to play.
















