System Requirements
What the Steam listing says your PC needs — minimum and recommended.
Read: System Requirements →Yes, Doomsday Diner has a free demo. Space Rock Games hosts a Windows demo on the game's official itch.io page — a compressed download of roughly 988 MB (.7z archive). The full game is sold separately on Steam for $9.99.
Quick facts: free · Windows only · downloaded from the official itch.io page (not Steam) · ~988 MB compressed · the full release build is Steam-only. Checked 2026-07-26.
The demo lives at
doomsdaydiner.itch.io/doomsday-diner,
an account operated by the developer (the page links the same official
Discord and store as the Steam listing, and the publisher page points to
it). The download is a .7z archive, so you'll need an
extractor such as 7-Zip. The itch page also carries the platform's
"No generative AI was used" disclosure tag for the game's assets.
As of 2026-07-26 the itch.io page still labels the project's status "In development", while the game is fully released on Steam: the Steam listing shows a release on July 23, 2026, and the publisher's page says "out now". Why the itch label still reads that way is not documented anywhere official, so we simply note the discrepancy. For anything release-related — date, price, patches — treat Steam as the authority.
No official source documents how the demo differs from the released game — which mechanics, how much content, or which build version it reflects — so it may not match what you'd buy today. On this wiki, any fact that comes only from the demo is labeled as demo-derived rather than silently mixed into release-build guidance; our editorial policy spells out that rule. (At the moment, no page on this site relies on demo-only observations.)
Two good reasons. First, price certainty: $9.99 is cheap, but free is cheaper. Second, hardware: the official recommended spec names an RTX 3090 — running the demo on your own machine tells you how the game handles your hardware better than any spec table can.
What the Steam listing says your PC needs — minimum and recommended.
Read: System Requirements →Release date, price, publisher credits, and official links.
Read: Release Date →What to expect from your first sessions once you're in.
Read: Getting Started →