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A deckbuilding card game where it's always your turn. Play as the master hackers of Quantum and take on the most dangerous malware in the world. Every action matters. Make plays, upgrade your deck, and break the enemy board!
✓ Supported
Solo Only
Unsupported
Keyboard & Mouse
Crowdsourced campaign length, extra objectives, and 100% completion metrics
Session-Based / Party Multiplayer
Designed for dynamic rounds, party matchmaking, and infinite multiplayer replayability. No fixed linear campaign duration.
Official high-resolution media gallery (6 screenshots)



Available game editions, collector bundles, Supporter Packs, and downloadable expansions
Official downloadable expansion or add-on content for Quantum Protocol (Steam App ID #1456450).
Live pricing across official digital stores, historical lows, and subscription catalog availability
Honest player critiques with verified playtime and karma upvoting
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Troubleshooting guides, build recommendations and accepted solutions
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Key directors, leads, and game development studios