Steam Playtests
Mariana Marina

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Mariana Marina playtest

by Reaper Fuel Studio

Build your dream boat, repair engines and deliver goods in the Marianas like the real deal.

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

Access
Instant
On playtest since
Oct 11, 2026
Planned release
Coming soon
Developer
Reaper Fuel Studio
Platforms
Windows
Players
Single-player
Languages
English

How to join the Mariana Marina playtest

  1. Open the game's Steam page with the Join playtest button. Sign in to Steam if it asks.
  2. Use the Mariana Marina 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.

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About Mariana Marina

In this boat mechanic simulator: A tropical paradise, boat engines that need the special touch, and no honest way to pay for parts.

After years of neglect, your boat is ready to be reborn. Repair, upgrade and customize with your personal flair. Collect used boats or make money selling them!

Learn to fix outboards, find and flip junk boats for cash, and deliver goods with whatever still floats. Pull plugs, fill tanks, diagnose real failures.

Live the island mechanic life, not a simplified version of it.

  • Mechanically accurate engines with individual parts.
  • Real working instruments, gauges and tools.
  • Diagnose failures yourself; no auto-fix, no shortcuts.

Grab some parts and check me at the marina.

From the game's Steam page.