Buy Theseus Protocol Steam Key
Theseus Protocol Steam Key: compare prices from 9 offers (November 2026)
A Theseus Protocol Steam Key — also known as a CD Key or digital code — is the official activation code you redeem on Steam and keep in your library permanently. From €8.10 (no fees, -17%) at GamesPlanet, 17% below the €9.75 (no fees) Steam price · 7 verified stores, 9 offers in stock · Updated 03h 18min ago.
Steam Card 10 €
Steam Key
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Final prices with fees
About Theseus Protocol
Theseus Protocol is a deck building strategy roguelike set in a dire dystopian world. Take the role of Prometheus and alter the fate of humanity with a collection of vigorous cards and a variety of weapons at the ready. Journey across disparate lands, encounter relentless foes, and unveil Mark City’s darkest secrets.
Unravel the fragmented narrative of Mark City across a divergent city riddled with elitist conspiracies and gang induced turmoil. Explore branching paths through successive playthroughs and reveal the history behind Mark City and its inhabitants. Each step plays a role in uncovering the truth.
Engage in stimulating turn-based battles and unleash an arsenal of extraordinary cards against brutal adversaries. Gain the tactical advantage by changing positions to dodge incoming attacks and even cause enemies to crash into one another. Leave no waste, as any cards leftover can be utilized as ammunition for Prometheus’ weaponry. The fate of humanity lies within the ultimate deck and a masterful strategy.
Key Features:
- Dynamic and stimulating turn-based battles with a strategic twist
- Nonlinear, fractured narrative to unravel across a roguelike adventure
- Progressive deck building through successive runs
- Influential card-fueled weaponry
- Three playable characters all with unique combat styles and narrative threads
How much does Theseus Protocol for PC cost right now?
Theseus Protocol for PC starts at €8.10 (no fees) at GamesPlanet, a Steam key, which is 17% under the €9.75 (no fees) it costs on the official store.
Supply is thin — 9 offers from 7 stores — and thin supply keeps prices steady rather than falling.
It is €0.61 away from its all-time low (€7.49, back in October 2024).
Steam Key
Steam Gift
Is it worth buying the Steam Key for Theseus Protocol now or waiting?
That €8.10 (no fees) key is expensive for what it usually costs.
- Those €8.10 (no fees) are 8% above what it usually costs, measured on the store price.
- Only 5 stores sell the Steam Key, and with that little competition the price barely moves.
- Across the 647 days we have tracked it, it has only been pricier than today on 1 day. The lowest it has ever cost is €4.18.
Worked out from 1,245 daily records of the Steam Key for Theseus Protocol across 8 stores. See the full price history.
The price does not include each store's payment fees. The percentage is measured on the store price, without coupons, because that is how we record the history. The analysis only counts Key offers. Shared accounts, Steam Gift and physical editions stay out, because they are not the same product and their prices move differently.
Which Theseus Protocol format should you buy?
By format: Steam Key from €8.10 (no fees) and Steam Gift from €9.91 (€10.20 with fees).
Can you activate Theseus Protocol in US?
8 of the 9 offers work on US — the Global ones plus the ones issued for your own region.
Most common FAQs when buying Theseus Protocol for PC in digital format:
Other stores may take 30–40 minutes depending on game availability. On release days, delivery times may be slightly longer.
If you notice an unusually long delay, contact the store or us, and we’ll resolve it as quickly as possible.
There have been occasions when those services were overwhelmed, which is why we also offer 24/7 customer support to help resolve any issues or questions.
In any case, we always offer a 100% guarantee, so you won’t have any problems, and if you do, we’ll resolve them as soon as possible.
Need more help? Use our FAQs.
Theseus Protocol
Is it worth it?
Is it alive?
- Watching now on Twitch
- Live channels
What the press says
Protocol is frustrating, annoying, and anger-inducing – I loved it! Despite the brutal and unforgiving insane A.I., who constantly kills you if you so much... Read more
Protocol is an unfocused, directionless mess of a game that tries to give too much without grasping the basics. The gameplay is frustrating, the dialogue... Read more
An absolute cluster of poorly written dialogue, terrible technical misses and infuriating puzzle mechanics, Protocol is a dreadful experience that will test your patience along... Read more
Protocol is a tortuous experience that combines clumsy, awful gameplay with an abysmal script. I would much rather fail the protocol, and be nuked, then... Read more
About the game
* languages with full audio
Requirements
- Requires a 64-bit processor and operating system
- Windows 10(64bit)
- Dual Core 2 GHz(64bit)
- 4 GB RAM
- Intel HD 4600(AMD or NVIDIA equivalent)
- Version 11
- 4 GB available space
- Requires a 64-bit processor and operating system
- Windows 10(64bit)
- Dual Core 2 GHz(64bit)
- 4 GB RAM
- GTX 970(Dedicated 4GB AMD or NVIDIA equivalent)
- Version 11
- 4 GB available space
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