Demo available for Retro inspired FPS ‘One Rotten Oath’

July 3, 2025

Written by Daniel S. Liuzzi

Sixty seconds is all you have… sixty seconds to defend yourself and your bunker from what used to be people. This is what awaits players in Piotr Bunkowski’s first-person shooter, One Rotten Oath.

In One Rotten Oath, players take on the role of a mysterious survivor who is also a programmer, trying to live as normally as possible in a bunker during an apocalypse. A leak at a nearby chemical lap has exposed people to the mysterious chemical into monsters. Unfortunately, the only generator in the bunker randomly malfunctions, forcing players to defend the bunker from waves of monsters who progressively get stronger each level.

 

 

 

 

Using the GDevelop Engine, along with a camera and green screen, One Rotten Oath is brought to life in old-school FPS action that calls back to the late 80s and early 90s DOS games. Players can now try the game out for themselves as the Demo is now available, with the game’s full release sometime this year.

 

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