Theseus Protocol
Released Aug 2023
Theseus Protocol is a deck building roguelike where rebirth offers strategic opportunity. Utilize a powerful suite of cards and weaponry to uncover the cruel truth behind the dystopian sci-fi world of Mark City.
69% positive · 372 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam $9.99 Green Man Gaming Steam key $9.99
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Evaluation
Theseus Protocol launched into Early Access in January 2023 and officially reached its 1.0 release on August 22, 2023. The 1.0 launch post (NEWS-2) described a complete content package: 3 characters, 9 weapons, 4 major levels, 66 enemies, 287 cards, 137 pieces of equipment, and multiple game modes. The developer framed this as the culmination of the Early Access period, thanking players who supported the game since EA.
Following the 1.0 release, the only post-launch developer communication was a minor bug fix patch on August 23, 2023 (NEWS-1). There have been no developer posts of any kind since that date — over two and a half years of silence as of June 2026.
The game has no DLC listed on the store, no unreleased content announcements, and no post-launch roadmap or statements indicating further updates are planned. The roadmap image referenced in earlier EA-era posts described plans that were fulfilled by the 1.0 release. The developer has not communicated any intent to add post-1.0 content. With the game having launched as a complete product and no post-launch update pattern ever established, the game is considered content-complete as of its August 22, 2023 release date.
Evidence
1.0 release announcement describes a complete content package: 3 characters, 9 weapons, 4 major levels, 66 enemies, 287 cards, 137 equipment, and multiple game modes. Developer thanks Early Access players, framing this as the finished product.
Minor bug fix patch posted the day after 1.0 launch. This is the last developer communication on record.
Media
Details
Developer
Publisher
Archive Games
Achievements
26
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player
About this game
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
Last evaluated Jun 21, 2026
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