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Demo availableUpdated Sep 12

Day 31

Windows

By SizilStank ↗

You were bitten hours ago. The clock in your blood is already running — and it isn't a virus. Fight through the waves of the dead, trade your nerve to a demon who was here before the city, and hold onto yourself for one more wave. Turn, and it's over.

Play the demo on Steam ↗Play demo

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GenreAction
PlatformsPC
PlayersSingle-player
PriceTBA
LanguagesEnglish
Latest from the studio

Straight from the devs.

Steam update · Sep 12

Demo hotfix is live, and here's what your feedback changed

The first tester bug report came in within a day of the demo going up: someone bought a door into an unfinished room, found an open window with no collision, and dropped to the bottom of the map.

Read the devlog ↓
Where to play

Wishlist it and follow it here.

Playable now

Demo available now

You were bitten hours ago. The clock in your blood is already running — and it isn't a virus. Fight through the waves of the dead, trade your nerve to a demon who was here before the city, and hold onto yourself for one more wave. Turn, and it's over.

Release
Oct 30, 2026
Price
TBA
Controller
See Steam
Straight from the studio

Every update in one place.

SizilStank's news lands here. Follow Day 31 without hunting through feeds.

Official sources onlyNo sponsored placementUpdated Sep 12
Read the devlog ↗

Languages

English

System requirements

Minimum

Minimum: Requires a 64-bit processor and operating system OS: Windows 10 64-bit Processor: Intel Core i5-8400 / AMD Ryzen 5 2600 Memory: 8 GB RAM Graphics: NVIDIA GeForce GTX 1060 6GB / AMD Radeon RX 580 DirectX: Version 11 Storage: 15 GB available space Additional Notes: SSD recommended

Recommended

Recommended: Requires a 64-bit processor and operating system OS: Windows 10/11 64-bit Processor: Intel Core i7-9700K / AMD Ryzen 7 3700X Memory: 16 GB RAM Graphics: NVIDIA GeForce RTX 3060 / AMD Radeon RX 6600 XT DirectX: Version 11 Storage: 15 GB available space Additional Notes: SSD strongly recommended

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Development timeline

From first build to post-launch.

  1. BuildIn developmentSizilStank
  2. ValidateDemos & playtestsNow
  3. LaunchReleaseOct 30, 2026
  4. LivePost-launchAfter launch