Quantum Protocol
Worth it · Roguelike · 2020
Steam Deck PlayableThe verdict
BUY IT.
Worth it at $12.99.
- Length
- 13.1h
- Value
- $0.99/hr
- Reviews
- 91% of 657 positive
Watch this gameOne alert at a price you pick.
Buy now or wait
Next discount: likely in the Winter Sale, Dec 17 to Jan 4. Calls like this were right 83% of the time in a backtest over 70 weeks.
Discounted in each of its last 8 seasonal sales. Last cut ended 11 days ago.
- Next sale
- Winter Sale, Dec 17 to Jan 4
Sources: IsThereAnyDeal, Valve.
What drives the score
How to read this
Grades run S to D, read from the buyer's side. ▲ marks a lift, ▼ a drag or a dock, ? an input we do not have, • a fact this genre's score does not use. How the grades work
About the game
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!
Minimum specs
Minimum on the Steam store: 4 GB of memory, NVIDIA GeForce GTX 460 or AMD Radeon HD 5770 /w 1GB VRAM, 3 GB of storage. Windows only.
The value story
32 discounts in the 6 years on record, a median of 30 percent off across all of them, roughly 9 weeks apart. Today it is at full price, and its last discount ended 11 days ago.
On value it sits in the top 20 percent of its genre. It is better reviewed than 79 percent of its genre. Among the games that feel like it, Cobalt Core ($19.99, scores 83) beats it on value, while it beats Cross Blitz ($22.99, scores 39).
More about Quantum Protocol
This site sampled 360 of its Steam-purchase reviews; 1 was written by a buyer who refunded it, sampled from reviews written December 2020 to August 2026.
The drop-off
69% start to 2% rarestNo achievement in this game marks the ending, so there is no finish rate. The curve runs from the most-unlocked achievement to the rarest, and its shape is where players stop. Steam global achievements
What players say
Giving this a very narrow "mixed" upvote given the heart that went into this and the price point. But I want to use this as a very strong warning that this game may not be for you. This is not a deck-builder in the traditional sense. It's a puzzle game, somewhat akin to the puzzle variants in MtG: Duels. Your deck-building options are somewhat limited, and each deck has a prebuilt synergy that you're expected to...
2 more reviews, 1 not recommended
Bought this game on sale thinking it would be fun to play around with for a couple of hours... here I am, over 100 hours later and I LOVE IT! The first thing I will say is, this game will not be for everybody. But personally, I love it so much that it has earned its place as one of my most favourite games. -Story- Perfect for what the game is, in my opinion. There's enough to introduce you to the characters and keep...
Suitable for people enjoying games like Go, you'd better double check everything before you do anything, while there are a lot of information you may misremember, there is no quick undo button, if you make a simple mistake in the boss fight, you have to go through everything again.
Steam reviews, mixed to its ratio and rotated daily. Opinions are theirs.
No data upstream: critic score (Metacritic).
Cite this score
Quantum Protocol scores 69/100 on the BANG Score (worth it) as of Oct 19, 2026. The BANG Score rates what a game is worth for the money. Via Steam BANGERS. https://steambangers.com/game/1328530/quantum-protocolReviews set the ceiling, and the size of the player base moves the BANG Score inside it. How it works, and where it is weak → Steam reviews as of Sep 28, price as of Oct 18. A number here look wrong? Tell me and I will check the inputs.