Download Casualties: Unknown
Buy the Windows game on Steam (app 4576490) or install the free demo (app 4576510). On 12 Nov 2026 the US list price was $22.99 and the launch discount showed $19.54, with the offer ending 24 Nov 2026. There is no browser build and this site hosts no game files.
Buy on Steam or get the free demo. The Steam full-game storage requirement is 500 MB of available space; this is not a measured download size. The older itch ZIP is listed as 286 MB by its creator.
Steam
| Build | What you get | Status |
|---|---|---|
| Full game | 11 layers, Windows, $22.99 list | Official |
| Free demo | 5 layers, free, released 20 Apr 2026 | Official |
| itch V5.1 demo | 286 MB, name your own price, older than the Steam demo | Official · older |
The 9 Nov 2026 news post says the demo will stay up and will not be updated, except a small text change and new ePDAs. I am not guessing whether a demo save carries into the full game. The news, the wiki, and the multiplayer readme I read do not say.
Steam news also lists bundles with Rain World, Palworld, Barotrauma, and Abiotic Factor. Prices inside a bundle move, so I am not copying a bundle total.
Questions
Is Casualties: Unknown free?
The demo is free. The full game listed at $22.99 on the US store on 12 Nov 2026, with a 15 percent launch discount to $19.54 until 24 Nov 2026.
Will the demo stay online?
Steam news on 9 Nov 2026 said the demo stays up and will not keep getting feature updates.
Related guides
Sources
| Source | Checked |
|---|---|
| Steam store page | 2026-11-12 |
| Steam demo page | 2026-11-12 |
| itch.io page | 2026-11-12 |
| Steam news | 2026-11-12 |