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Her long awaited vacation cut short by an orbital invasion, bounty hunter Ethelyn Dax takes on a whole army of mercenaries and their robotic auxiliaries to reconquer the resort city of Ctesiphon.

Blast your way through seven levels and a climactic bossfight with an old rival, making use of an arsenal of varied weapons to take on a multitude of enemies. Level design is open-planned, encouraging you to flank enemies, find alternate paths, and scout for secrets.

Made from scratch over the course of nearly a decade by a single developer on Linux using C/C++, OpenGL, and open-source Quake mapping tools (with the exception of the key art, music, and a couple of textures). The entire game, the engine it runs on, and the tool stack for all the assets went through multiple rewrites and long hiatuses before finally taking its final form in the last couple years of development.

Ctesiphon
StomyDeveloper
StomyPublisher
Q4 2025Release
🎹🖱️ Keyboard + Mouse
🕹️ Partial Controller Support
🎮 Full Controller Support
No user reviews (0 reviews)
Public Linux Depots:
  • [0 B]
Ctesiphon is now Steam Deck Verified!

Surprise! Ctesiphon is now Steam Deck Verified!steamhappy

This comes with the caveat that on the Deck you\'ll get the Windows version by default launching through Proton, as stated in the previous update. The situation on native Linux hasn\'t changed yet and may not for a good while so it\'s not recommended to run the game with the native runtimes on the Deck, though you may have better results using a plugged-in controller rather than the integrated controls.

Additionally, version 1.04 is going live right now with the following changelog:

Bugfixes

  • Resolution options were showing the wrong tooltip

    [/*]
  • Gamma slider was a little buggy, especially when using buttons to adjust it

    [/*]
  • The Game Options screen was lacking a scrollbar

    [/*]
  • Some of Jens Vide\'s songs had not been attributed in the credits

    [/*]
  • Had to remove a possible sequence break right at the start of the Multiport (map no. 5). I normally prefer to at least turn these into secrets but this one in particular breaks the map a little too much.

    [/*]
  • Some garbage bags have had additional clip boxes put around them to prevent you from getting stuck in Outskirts (map no. 3)

    [/*]
  • A spot in the Comm Station (map no. 6) where you could get stuck between two walls has been patched up.

    [/*]
  • Windows version was not applying vsync at launch

    [/*]
  • Sometimes the final boss gets stuck and doesn\'t move or shoot for a while. This unfortunately happens with most enemies in the right conditions, something messes up between line-of-sight checks and the attacking logic that puts them in a state where they just do nothing until a timer runs down. This has been really hard to catch on my end. I\'m not confident I\'ve actually fixed this but I\'ve put in a failsafe that should make it less common.

    [/*]

Minor Additions

  • Toggles have been added to allow skipping the prompts for quickloading and for starting a level

    [/*]
  • An option has been added to turn off auto-run. This overrides the \"Walk when scoped\" option which has now been moved into Game Options.

    [/*]
  • Quick Save and Quick Load have also had additional defaults added for F5 and F9

    [/*]
  • Difficulty options now make it a bit clearer that Hard difficulty assumes map knowledge and that Normal is the recommended difficulty for first-time playthroughs.

    [/*]
  • Super Easy difficulty now slowly regenerates your health up to 100 the same way that overhealth ticks back down to 100 on Extra Hard.

    [/*]
  • Another secret has been added to the Highway level (map no. 2). It should no longer be so easy to see the edge of the map from there and in return you can now get another early weapon.

    [/*]

Balancing

  • A handful of drink pickups have been added to the final boss fight on Normal difficulty so there\'s at least some fluid available for the jetgun, though even on Easy you will need to use other weapons as well.

    [/*]
  • The rocket launcher on Highway (map no. 2) has been made more visible as it is really not meant to be a secret

    [/*]
  • The casino level (map no. 7) has been made a little bit easier on Normal difficulty, removing some of the mechs later in the level. Additional rocket pickups have also been added and some existing ones made a bit more visible. The enemies remain untouched on Hard difficulty, you should know what you\'re getting yourself into.

    [/*]

Key art for this update brought to you by CSAURAGEUL!

[ 2025-12-09 07:26:06 CET ] [Original Post]

Minimum Setup

  • OS: Ubuntu 12.04 LTS
  • Processor: Intel Core i5-2450MMemory: 4 GB RAM
  • Memory: 4 GB RAM
  • Graphics: nVidia GeForce GT 640M
  • Storage: 400 MB available space
  • Memory: 4 GB RAM
  • Recommended Setup

    • OS: Manjaro Linux
    • Processor: AMD Ryzen 5 3400GMemory: 4 GB RAM
    • Graphics: AMD Radeon RX 5700
    • Storage: 400 MB available space
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