PCGame

Quantum Protocol

A turn-based card game where your deck becomes your hacking toolkit

Kaio Meris · Released Nov 4, 2020

Strategy

Reviews
Very Positive
91% of 669
Recent reviews
Not enough recent
Players
0
daily peak, Oct 28, 2026
Steam Deck
Playable
Last update on Steam
2 months ago
Aug 8, 2026
Minimum PC
GeForce GTX 460
4 GB RAM · 3 GB disk
Full requirements

What is Quantum Protocol?

A single-player sci-fi card game with visual novel storytelling, in which a computer virus threatens the modern world. You plan card plays and adjust your deck while tackling scenarios that range from short puzzles to longer tests of endurance.

For you if...

  • +you want a roguelite endgame after the story campaign
  • +you enjoy working out precise card combinations and timing

Not for you if...

  • −you prioritize detailed character development in visual novel stories

What players say

91% of 669 reviews are positive

Players praise the card combat's strategic depth and the soundtrack. Common complaints concern restricted deckbuilding options and a steep learning curve.

Screenshots and trailer

Quantum Protocol screenshot 1

Quantum Protocol system requirements

Minimum: GeForce GTX 460, 4 GB RAM, 3 GB of disk space.

As published by the developer.

Can my PC run Quantum Protocol?

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Minimum

OS
Windows 10 (64 bit only)
Processor
2.4 GHz Dual Core
Graphics
NVIDIA GeForce GTX 460 or AMD Radeon HD 5770 /w 1GB VRAM
Memory
4 GB RAM
Storage
3 GB available space
DirectX
Version 11

Recommended

OS
Windows 10 (64 bit only)
Processor
2.4 GHz Quad Core
Graphics
NVIDIA 970 / AMD Radeon 290
Memory
8 GB RAM
Storage
3 GB available space
DirectX
Version 11

Does Quantum Protocol have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does Quantum Protocol run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

  • Some in-game text is small and may be hard to read
  • All functionality is accessible with the default controller configuration
  • Shows Steam Deck controller icons
  • Default graphics settings perform well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Achievements
11
Steam features
Cloud saves, Family Sharing, Trading cards
Languages
Text only: English, Japanese, Korean, Simplified Chinese, French.

Does Quantum Protocol use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam

Tags

Recent updates

1 DLC available.

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