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A visual novel 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!
Game modes: Single player
Right now the lowest price for Quantum Protocol we're tracking is $12.99 at Steam. We compare 1 store and prices refresh every few minutes.
The lowest price we've recorded for Quantum Protocol is $12.99 at Steam on August 1, 2026. The current best price matches that all-time low — historically a good time to buy.
90% of 624 Steam user reviews for Quantum Protocol are positive ("Very Positive").
Quantum Protocol is available on PC (Microsoft Windows). It supports single player.
The cheapest Quantum Protocol price right now is $12.99 at Steam.
| Store | Discount | Price | Buy link |
|---|---|---|---|
 SteamBest priceAll-time low | — | $12.99 | Buy Quantum Protocol at Steam |
All-time low: $12.99 at Steam on Aug 1, 2026 — the current best price matches it, a good time to buy.
Prices in USD, refreshed every few minutes. Switch currency on this page for EUR/GBP/BRL and more.
