
Game Overview
Mark City is a collapsing dystopia where corporate privilege, gang violence, and buried conspiracies shape every street corner. Theseus Protocol turns that grim setting into a tactical deck-building roguelike, casting you as Prometheus and asking you to fight for humanity’s future one difficult decision at a time. Its tone is harsh and paranoid rather than heroic, with each run exposing another fragment of a city designed to hide the truth. The central appeal lies in balancing card-game planning with battlefield positioning, so victories come from careful sequencing rather than lucky draws alone.
Combat unfolds in deliberate turns, but it is far more active than simply playing attack cards. You move around the arena to evade telegraphed strikes, line enemies up for collisions, and control space before hostile units can surround you. Cards serve double duty: the hand you do not spend on direct tactics can be converted into ammunition for Prometheus’ weapons, making every unplayed option part of the plan rather than wasted potential. Successful runs expand and refine your deck while sending you down alternate routes through the city, where encounters, discoveries, and choices gradually reveal different sides of the story. Three playable characters bring separate fighting styles and narrative perspectives, encouraging players to revisit the campaign beyond their first clear.
What separates Theseus Protocol from more familiar deck roguelikes is its positional combat and its willingness to make cards part of both offense and resource management. The fractured narrative suits the run-based format, since repeated attempts are not just about chasing stronger builds; they are also the method for piecing together Mark City’s history and the motives of its factions. Its dystopian atmosphere feels closer to a cyberpunk conspiracy thriller than a cheerful score-chasing card battler, while the tactical grid gives it a hint of Into the Breach alongside the deck experimentation of Slay the Spire. It is best suited to players who enjoy demanding turn-based strategy, flexible deck construction, and stories that reward persistence.
Screenshots
Installation
- Select the Download button at the top of this page to open UploadHaven.
- On UploadHaven, wait for any countdown, then select Free Download. Optional: UploadHaven Pro for faster downloads.
- When complete, extract the archive to a Theseus Protocol folder using 7-Zip.
- Open the extracted folder and start the game normally.
- For errors, check Setup Guide & Troubleshooting below. Keep your security software enabled.
System Requirements
- Requires a 64-bit processor and operating system
- OS: Windows 7(64bit)
- Processor: Dual Core 2 GHz(64bit)
- Memory: 4 GB RAM
- Graphics: Intel HD 4600(AMD or NVIDIA equivalent)
- DirectX: Version 11
- Storage: 4 GB available space
Setup Guide & Troubleshooting
How do I fix missing DLL errors for Theseus Protocol (v1.0.10823)?
After extracting Theseus Protocol (v1.0.10823), navigate to the _Redist or _CommonRedist folder inside the game directory and install DirectX, Vcredist, and any other dependencies included.
What should I do if the downloaded file is corrupted?
The full archive is 1.03 GB — make sure your download completed fully before extracting. Use 7-Zip to extract the files. If you still see a "file corrupted" error, re-download and try again.
Do I need to run the game as administrator?
Usually, no. Start the game normally from the extracted folder. If you see a permissions or save error, check that the folder is writable and follow the game's documented fix. Only grant administrator access when a trusted game's specific setup requires it.
How do I update my GPU drivers for this game?
The game won't launch — what should I try?
Check that extraction completed and your PC meets the system requirements, including Version 11. Note any error message before choosing a fix. If it identifies a missing runtime, install the required DirectX components or Microsoft Visual C++ Redistributable from Microsoft.
My antivirus is blocking the game — is it safe?
A warning needs to be investigated; the download source alone cannot confirm that a file is safe. Keep your security software enabled and review the detection details. Do not run or restore a flagged file unless you have verified that it is a false positive. If you are unsure, leave it quarantined.