Is there a ULTRAKILL browser port?
Short answer
Not realNo. As of 13 Nov 2026 there is no real ULTRAKILL browser port of the full game. Unofficial web builds on itch.io run only the free Prelude demo, and one says it was made for school game portals. New Blood hasn't released or approved a browser version. ULTRAKILL is sold for PC on Steam, where the Prelude demo is free to download.
We don't link to this host. Here's why.
Which devices does the ULTRAKILL browser port work on?
| Device | Result | Download | Time to play | Smoothness | Notes |
|---|---|---|---|---|---|
| Windows · Chrome | Not tested | — | — | — | Not tested yet |
| Windows · Firefox | Not tested | — | — | — | Not tested yet |
| Mac · Safari | Not tested | — | — | — | Not tested yet |
| Chromebook | Not tested | — | — | — | Not tested yet |
| Android · Chrome | Not tested | — | — | — | Not tested yet |
| iPhone · Safari | Not tested | — | — | — | Not tested yet |
| Gamepad | Not tested | — | — | — | Not tested yet |
Is there an ULTRAKILL browser version?
No. ULTRAKILL has no official browser version as of 13 Nov 2026. Arsi “Hakita” Patala’s fast first-person shooter is a PC game published by New Blood Interactive, sold on Steam since its early-access launch in 2020. Unofficial itch.io pages offer web builds of the free Prelude demo. We don’t link them, because New Blood hasn’t approved them.
Where can I play ULTRAKILL legally today?
ULTRAKILL is sold for PC on Steam, where it is still in Early Access. The free demo on its Steam page, the Prelude, is the legal way to try it, though it is an older build than the full game.
| Way to play | Platforms |
|---|---|
| ULTRAKILL (Early Access) | PC (Steam) |
| ULTRAKILL Prelude demo | PC (Steam), free |
| Browser or phones | Not available |
What are the ULTRAKILL Prelude web builds?
ULTRAKILL Prelude web builds are fan projects that recompile the free demo for HTML5 browsers. One offers downloads for Chromebooks and its own servers; a player reported a crash after the first level, 0-1. Another says it was made for school game portals. None covers the full game, and none is official.
Why do ULTRAKILL browser sites keep appearing?
ULTRAKILL browser copies spread on game portals aimed at school computers for school Chromebooks, where Steam can’t be installed. A copy can be changed by anyone, and nobody checks what else it loads.
What can I play instead in a browser?
Fast shooters with free, legal browser versions are a safer choice: fan web ports of Doom play the free shareware episode, and a web port of Quake 3 runs live multiplayer with id’s free demo data. Both are on our test list in games you can play in a browser.
How do I avoid fake ULTRAKILL downloads?
Avoid “ULTRAKILL full game” browser links, APKs and download buttons on game portals. Get the game or the demo from Steam. Our guide on how to spot fake ports lists the warning signs.
Does the ULTRAKILL browser port still work? Player reports
No player reports yet. Be the first.
More questions about the ULTRAKILL browser port
Is the ULTRAKILL browser game real?
Partly. Fan web builds of ULTRAKILL's free Prelude demo exist, but they are unofficial, and none runs the full game.
Is there an ULTRAKILL browser full game download?
No legal one. The full game isn't available in a browser; a site offering it is sharing a copy without permission.
Is there an ULTRAKILL browser demo?
Not an official one. The official free demo, ULTRAKILL Prelude, is on Steam for PC; browser builds of it are unofficial fan work.
Does ULTRAKILL web work on mobile?
No. ULTRAKILL is a PC game, and the unofficial web builds are made for keyboard and mouse.
Has New Blood announced a browser version of ULTRAKILL?
No. Neither the developer, Arsi "Hakita" Patala, nor publisher New Blood Interactive has announced a browser release.
When will ULTRAKILL release in a browser?
No date. No authorised ULTRAKILL browser port has been announced.
