Screenshots
Watch trailer on Steam ↗The Great Diamond
RedSoup Studio · Published by RedSoup Studio
Last updated 29 Sept 2026
A co-op heist adventure where one player infiltrates the museum and the other guides them from a remote command center. Communicate, solve puzzles, bypass security, and steal priceless treasures together.
Action, Casual · More free games
About this game
The Great Diamond is an asymmetrical co-op heist adventure where two players must work together to infiltrate heavily guarded museums, steal priceless treasures, and pull off the ultimate robbery.
One player becomes the Infiltrator, sneaking through exhibits, avoiding security systems, and carrying valuable loot. The other becomes the Operator, monitoring cameras, analyzing blueprints, hacking security devices, and guiding their partner through danger from a remote command center.
Every museum presents new challenges, traps, puzzles, and surprises. Success depends entirely on communication. The Infiltrator can only see what's in front of them. The Operator sees the bigger picture. Neither player has enough information to succeed alone.
Coordinate your actions, improvise when plans fall apart, and escape with your loot before security catches up.
The biggest prize awaits those skilled enough to reach it:
The Great Diamond.
Game Features
ASYMMETRICAL CO-OP GAMEPLAY
Play two completely different roles. One player infiltrates the museum in first person while the other operates advanced systems through a unique command interface. Each role offers distinct mechanics, responsibilities, and perspectives.
COMMUNICATION IS EVERYTHING
Share clues, solve puzzles, disable security systems, and react to unexpected situations together. Clear communication is your most valuable tool.
PLAN THE PERFECT HEIST
Navigate laser grids, surveillance cameras, locked vaults, security checkpoints, and complex museum defenses. Every successful theft feels like a carefully executed operation.
EXPLORE UNIQUE MUSEUMS
Infiltrate museums filled with rare artifacts, hidden secrets, and themed exhibits. Each location introduces new mechanics, challenges, and treasures to steal.
CHAOTIC CO-OP MOMENTS
Even the best plans can go wrong. Quick thinking, teamwork, and a little luck can turn disaster into an unforgettable escape.
THE ULTIMATE SCORE
Steal increasingly valuable artifacts as you work toward the most legendary prize of all: The Great Diamond.
Note:
This game is online co-op only and requires a microphone.
System Requirements
Will my PC run this? →Minimum
- OS *: 64-bit Windows 7
- Processor: Intel Core i5-4430 / AMD FX-6300
- Memory: 4 GB RAM
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
The Great Diamond is now on Steam!
We're excited to finally announce that The Great Diamond now has its own Steam page!If you're interested in cooperative heist games, this is the perfect time to join us as development continues.Wishlist the gameAdding The Great Diamond to your wishlist is one of the biggest ways you can support us right now. It helps more players discover the game and lets you know as soon as we have major updates.Playtest sign-ups are now openWe're also opening registrations for our upcoming playtests.Click "Request Access" on the Steam page to join the list. We'll be inviting groups of players in waves, with the first playtest coming soon. If you're selected, you'll get the chance to help shape the game by sharing your feedback early in development.Follow developmentDon't forget to hit the Follow button on our Steam page.We'll be posting regular development updates, behind-the-scenes progress, gameplay reveals, and future playtest announcements as we continue building the game.Development is moving at full speed, and we can't wait to show you what's coming next.Thank you for your support—we're looking forward to seeing you in the museum!What's next?Coming soon:First gameplay footageMore museum environmentsNew gadgets and security systemsOur first closed playtestDeveloper diaries and behind-the-scenes updatesRead full article on Community Announcements (RedSoup Studio)
