Steam
Store data
- Store status
- Coming soon
- Scheduled release
- 30 October 2026
- Positive reviews
- —
- Total reviews
- 0
- Release date
- 30 October 2026
Steam release scheduled · App 2121270
Decay Constant
- Single-player
- Partial Controller Support
- Family Sharing
Player tracking—Begins when the game launches
Release date30 October 2026Scheduled by Steam
Store statusComing soonSteam store listing
Steam rating—0 reviews
Steam metadata
Game information
Details supplied by the Steam store
- App ID
- 2121270
- App type
- Mod
- Developer
- Hail Hazmat ↗
- Publisher
- Hail Hazmat ↗
- Supported systems
- Windows
- Genres
- Action
- Release date
- 30 October 2026
- Last player update
- Awaiting first sample
Steam store data
System requirements
Supplied by the developer on Steam
Windows
Minimum
- OS *
- Windows 10, 8, 7, Vista, XP (32/64-bit)
- Processor
- 1.7 Ghz
- Memory
- 512 MB RAM
- Graphics
- DirectX® 9 level Graphics Card (Requires support for SSE)
- DirectX
- Version 9.0
- Storage
- 10 GB available space
Recommended
- OS *
- Windows 10, 8, 7, Vista, XP (32/64-bit)
- Processor
- Pentium 4 processor (3.0GHz, or better)
- Memory
- 1 GB RAM
- Graphics
- DirectX® 9 level Graphics Card
- DirectX
- Version 9.0
- Storage
- 10 GB available space
This range will fill as SteamWatch collects more samples.
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Twitch
Twitch stats
Awaiting the first Twitch sample.
Long-term history
Monthly players breakdown
Calculated from SteamWatch samples
Monthly data will appear after the first successful player sample.
Price history is not available for this title yet.
Positive rating—
Positive reviews0
Negative reviews0
Review history is not available for this range yet.
Recent views use Steam's daily review activity. Longer views use weekly totals, retained by SteamWatch.
About this game
Description
Supplied by the Steam store
Warning. Surveillance and detection systems inactive. Multiple subject containment failure. Facility compromised. I wonder what’ll happen to you?
In Decay Constant, play as a Vortigaunt trying to escape the clutches of both the combine and the dilapidated headquarters of pre 7 Hour War company Luxor Tech. A former extraterrestrial lab rat, your link to the Vortessence is cut off due to Luxor Tech augmentations, and you must rely on a combination of Vortigaunt powers and traditional weapons to survive. Uncover why the combine have established themselves at the headquarters of your former captors and escape the surreal decaying facility around you.
Decay Constant is a modification for Half-Life 2, the Half-Life™ franchise is © Valve® Corporation
Steam gallery
Screenshots
10 available
Steam has not listed DLC or a demo for this game yet.
Steam global stats
Achievements
0 achievements
No public achievements found.This game may not use Steam achievements, or its global unlock data may not be public yet.
Saved from Steam
Patches
0 tracked updates
No patch posts tracked yet.SteamWatch will check again automatically. Some developers publish updates outside Steam announcements.
Game activity
Recent changes
Steam events and SteamWatch observations
- SteamRelease
Release scheduled on Steam
Steam currently lists 30 Oct 2026 as the release date.