Steam Playtests
Sync - Sink

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Sync - Sink playtest

by SyrupyGames

Chaotic same-room party game for 2–8 players where phones act as rowing oars over your local home Wi-Fi. Row using phone gyro to navigate rapids and race up to 4 crews. Only 1 PC copy needed to host - friends in the room join free on iOS & Android with no extra controllers!

Anyone with a Steam account can join, and it's free.

Access
Instant
On playtest since
Oct 25, 2026
Planned release
To be announced
Developer
SyrupyGames
Platforms
Windows
Players
Co-op, Multiplayer, Single-player, Split-screen co-op
Languages
Arabic, English, Japanese, Portuguese - Brazil and 3 more

How to join the Sync - Sink playtest

  1. Open the game's Steam page with the Join playtest button. Sign in to Steam if it asks.
  2. Use the Sync - Sink playtest signup there. You're in straight away, with nothing to pay.
  3. The playtest shows up in your Steam library, ready to install and play.

New to playtests? How Steam playtests work

How AI is used

Some of the art is generated, and Localization was done by AI as well. These usages are all temporary and will be replaced with real art, and localization by launch

The developer's own words, from Steam.

About Sync - Sink

How it works

  • 1 PC Host: Launch the game on Steam.
  • Free Phones: Friends open the free app on iOS or Android—it automatically finds your game over Wi-Fi.
  • Row Together: Tilt your phone like an oar to paddle and steer!

Phone = Oar

Sync - Sink is a chaotic physics party game where your smartphone becomes your paddle.

Row in real life to steer your boat through the rapids, using the phone's gyro.

No controllers needed - if you have a phone, you can join!

Grab up to 7 friends, deploy different tools and powerups, and work together to bring your boat to the finish line, or split into up to 4 teams and race.

Bump into each other, yell, cry, make up - it's all about communication!

From family game night, to sweaty speedrunning sessions

Anyone can pick up a phone and row (or bang the drum), making it easy for kids and non-gamers to jump straight into the chaos. But mastering the water physics, or vaulting over terrain, is where the heart of the game really is.

From the game's Steam page.