FPS Quest is an FPS where FPS is your health. Every hit, every mistake, and every bad decision reduces your performance... and breaks the game itself.

To survive, you'll need to tweak the settings on the fly: lower the graphical quality of walls, enemies, and weapons; remove columns, doors, ceilings, walls... and even the floor. Anything goes to gain FPS. But beware: remove too much, and the world becomes more dangerous, confusing, or outright absurd. In FPS Quest, optimizing is risky.

The game where the Patch Engine was installed is built on a flawed foundation. Its core simulation is frame-rate dependent, due to a fundamental programming mistake in the original game loop. The game speed is tied to performance instead of real time: low FPS slows the world down, while high FPS speeds everything up. When the Patch Engine is installed, this flaw can no longer be hidden. Systems meant to mask the problem are stripped away, exposing and amplifying the broken behavior.

But not everything is bad. As you progress, you can obtain scripts: abilities that let you use FPS to your advantage. You’ll be able to control FPS with your mouse wheel at the cost of temperature, speeding up the game or slowing it down like a dynamic bullet time.

Explore prebuilt but recombined levels each run, advance through floors with increasingly glitched enemies, in a constant battle to see who can cheat the most, and choose between new settings, global upgrades, or alternative weapons at the end of each level. Every choice affects not only your combat power, but the state of the game itself.

As you progress, different factions will try to influence you:

• The Patch Engine Developers, desperate to keep the mod alive and monetize it.

• The OutofBounds, enemies of monetization and difficulty, guiding you with shortcuts and secrets.

• The Custodians, defenders of the original developer’s vision, opponents of glitches and cheats.

• The Null Process, a broken AI that only wants you to stop progressing so it can rest.

Your actions, not your words, will determine which faction you ultimately side with.

And watch out for the Dungeon Lord, an overenthusiastic, paternalistic, and clumsily offensive AI who tries to “help” by removing obstacles... though sometimes it makes everything worse.

FPS Quest is more than a shooter: it’s a constant fight against the game, its performance, and its own rules. The fewer FPS you have, the slower your actions. Your worst enemy isn’t always a demon or a skeleton, it can be your own framerate.

Lower graphics to survive?

Create glitches to progress?

Break the game to stay alive?

Here, it’s not only allowed... it’s part of the design.

Important: FPS Quest doesn’t affect your real FPS. Playing at low real FPS is uncomfortable and nauseating.

That’s why the game simulates a low-FPS world and turns it into gameplay: a fun challenge, just like other games turn unfun or boring real-life tasks into playable mechanics.