What is the cheapest place to buy Quantum Protocol?

Steam at $12.99 — an official store, and the lowest of the 1 store we compare for your region. Prices update through the day, so check the table above before buying.

Is Quantum Protocol free?

No — Quantum Protocol is a paid game. The cheapest we can find it is $12.99.

Has Quantum Protocol ever been cheaper?

Yes — the lowest we have tracked since we started tracking it in June 2026 is $9.09. It is $12.99 today.

Is Quantum Protocol Steam Deck compatible?

Mostly. Valve rates Quantum Protocol Playable on Steam Deck: it runs, but may need some manual tweaking — a community controller layout, or zooming in on small text.

Can I play Quantum Protocol on Mac?

Not natively — Steam lists no macOS version of Quantum Protocol. Mac players would need a cloud gaming service or a Windows compatibility layer.

Is Quantum Protocol multiplayer?

No — Steam lists Quantum Protocol as single-player only.

Is Quantum Protocol on PC Game Pass?

No — Quantum Protocol is not on PC Game Pass right now. The best price to buy it right now is $12.99.

Quantum Protocol

Name: Quantum Protocol
Brand: Kaio Meris
Availability: InStock

Kaio Meris · November 4, 2020 · Anime, Deckbuilding, Card Game, Visual Novel, Class-Based

Buy Quantum Protocol from Steam at $12.99 — the cheapest of 1 store we compare.

Visual Novel deals Anime deals Card Game deals Deckbuilding deals

Very Positive91% · 6571playing now

Best price

$12.99

lowest tracked $9.09

Buy at Steam

Prices last checked 1 Aug 2026, 13:36 UTC

More games under $15 →More Steam deals →

Where to buy Quantum Protocol — official stores

Steam

Standard Edition · Steam

$12.99

Buy

Quantum Protocol price by region

Quantum Protocol costs $7.49 in Georgia (USD), £10.99 in the United Kingdom, €12.79 in Europe (EUR), $12.99 in the United States, CA$16.99 in Canada, A$18.95 in Australia, NZ$18.99 in New Zealand, R$41.99 in Brazil and zł59.99 in Poland right now.

Cheapest Quantum Protocol offer in each region, in local currency
Region	Best price	Official store	Key shop	Stores
Georgia (USD)	$7.49	$7.49	—	1
United Kingdom	£10.99	£10.99	—	1
Europe (EUR)	€12.79	€12.79	—	1
United Statesyour region	$12.99	$12.99	—	1
Canada	CA$16.99	CA$16.99	—	1
Australia	A$18.95	A$18.95	—	1
New Zealand	NZ$18.99	NZ$18.99	—	1
Brazil	R$41.99	R$41.99	—	1
Poland	zł59.99	zł59.99	—	1

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About Quantum Protocol

https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1328530/extras/quantumGif1.gif
Build your deck as you go in this challenging card game. Take on multiple scenarios. Some will be quick puzzles, others will be long tests of endurance. You'll need to spend as much time planning your approach as executing it.

Change Your Deck. At Any Time.

Adapt to any situation quickly. But be careful, enemies will adapt as well.
https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1328530/extras/buildShow.jpg

Break Any System. Even the Game Itself.

Cards are your hacking tools. With so many to choose from, no two runs will be the same.
https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1328530/extras/cardShow.jpg

Behind Every Program, A Dream.

Experience the lives of the people behind the code. Even as an unstoppable computer virus threatens to destroy the modern world, sometimes the most important problems are the ones hidden inside each of us.
https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1328530/extras/bgShow.jpg

Quantum Protocol — game info

Platforms: Windows
Steam Deck: Playable
Player modes: Single-player
PC Game Pass: Not included

Price alert

Get notified the moment the price hits your target.

Quantum Protocol price history

Quantum Protocol is $12.99 at Steam right now, compared across 1 store. The lowest we have tracked is $9.09.

2026-06-19low $9.09 · now $12.99

Quantum Protocol price changes · tracked since 19 Jun 2026
Date	Price	Store
10 Jul 2026	$12.99 ▲	—
26 Jun 2026	$9.09 ▼	—
19 Jun 2026	$12.99	—

Embed this price on your site

A live price and history chart for Quantum Protocol, updating on its own. Free to use anywhere — it carries a link back here and needs nothing else.

Quantum Protocol — questions & answers

What is the cheapest place to buy Quantum Protocol?: Steam at $12.99 — an official store, and the lowest of the 1 store we compare for your region. Prices update through the day, so check the table above before buying.
Is Quantum Protocol free?: No — Quantum Protocol is a paid game. The cheapest we can find it is $12.99.
Has Quantum Protocol ever been cheaper?: Yes — the lowest we have tracked since we started tracking it in June 2026 is $9.09. It is $12.99 today.
Is Quantum Protocol Steam Deck compatible?: Mostly. Valve rates Quantum Protocol Playable on Steam Deck: it runs, but may need some manual tweaking — a community controller layout, or zooming in on small text.
Can I play Quantum Protocol on Mac?: Not natively — Steam lists no macOS version of Quantum Protocol. Mac players would need a cloud gaming service or a Windows compatibility layer.
Is Quantum Protocol multiplayer?: No — Steam lists Quantum Protocol as single-player only.
Is Quantum Protocol on PC Game Pass?: No — Quantum Protocol is not on PC Game Pass right now. The best price to buy it right now is $12.99.

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended May 9, 2026

从超时空方舟闻名而来的，打完剧情后感觉相比卡牌游戏，其实更像是陷阵之志

Recommended Apr 13, 2026

Underrated game. Reasonably fun despite a very lengthy tutorial and "puzzle" section, which then opens to a story mode, which then opens to a roguelike. Very fast and strategic battles. Very well worth a play if you're into card games.

Recommended Mar 22, 2026

Quantum Protocol is a nice game but really difficult to complete.

Recommended Jan 31, 2026

This is smart as hell and because it's always your turn like Slay the spire you plan ahead what to do and the combo feels amazing, I will try my best to finish it,

Recommended Dec 26, 2025

A great single player card game. Figured I'd leave a review now that I am doing my third playthrough.

Recommended Nov 22, 2025

It is a nice game with, unfortunately, a horrible flaw that makes the endgame completely unplayable for me - you can't resume the (lengthy, multistage) endgame fights. If you close the game - you have to start from the beginning. This is just not how I roll.

Community reviews

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0 reviews

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