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Nightmare of Decay

Nightmare of Decay

A first-person action horror game set in a nightmarish manor infested with zombies, psychotic cultists, and a horde of other horrors. Utilize an assortment of different weapons in a brutal fight for survival as you try to escape from the Nightmare of Decay.

Released May 3, 2022 Developer Checkmaty Platforms Windows ActionHorrorFPSSurvival HorrorZombies
View on Steam ↗ $4.99 (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

96.0%positive3,872 reviews
Recommended · 5 found this helpful

“One of the best indie games I’ve ever bought. It’s truly a love letter to classic survival horror games like Resident Evil. If you’ve played a lot of the old classic titles, you will find plenty of easter eggs and subtle references hidden throughout. It’s also short and sweet,…”

— a player, Steam review · 4 hrs played
Recommended · 8 found this helpful

“Excellent indie Resident Evil clone! The main campaign is Short, but great, and very replayable. It also has a procedurally generated dungeon mode, a horde mode, and a RANDOMIZER. ALL SURVIVAL HORROR GAMES SHOULD HAVE A RANDOMIZER BUILT IN! The game is one of the best deals I've…”

— a player, Steam review · 11 hrs played
Recommended · 3 found this helpful

“Goofy little resident evil like game, pretty fun”

— a player, Steam review · 3 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-11 13:53 UTC · history via SteamCharts.

1playing at last check
824-hour peak
228all-time peak
0 50 100 2023 2024 2025 2026 67 avg · May 2022

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

16achievements
4.5%median completion
2.9%rarest: Knife Only
65.3% of players 47.2% of players 44.0% of players 42.6% of players 15.1% of players 6.6% of players 5.5% of players 4.5% of players 4.5% of players 4.1% of players 4.1% of players 4.0% of players 4.0% of players 3.8% of players 3.0% of players 2.9% of players 65.3% 0% most earned rarest
Almost everyone has
65.3%Fresh Meat — Kill the Meat Golem in the campaign.
47.2%Finisher — Finish the campaign on any difficulty.
44.0%A Small Favor — Complete the favor for the creature in the hole.
Rarest badges of honor
2.9%Knife Only — Finish the campaign on any difficulty using only the Survival Knife.
3.0%Melee Only — Finish the campaign on any difficulty using only melee weapons.
3.8%Slow and Steady — Finish the campaign on any difficulty without sprinting.

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$4.99current · sampled 2026-07-26 08:39 UTC
$4.99lowest since tracking began2026-07-11
US4.99 USD
EU3.99 EUR
UK3.99 GBP
Australia7.50 AUD
Canada5.69 CAD
Japan520 JPY
Brazil10.89 BRL
China22.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

Brazil≈$2.1 Japan China Canada EU US Australia UK≈$5.3

Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.

$0 $5 $10 07-11 07-13 07-16 07-19 07-22 07-26

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Oct 29, 2022
Update v1.16 - Small update for reported issue

-Fixed physics issue with the dead bodies in the Chainsaw Psycho boss area where projectiles (specifically rockets from the Rocket Launcher) would sometimes pass through the bodies and out of the map.

Jul 16, 2022
Update v1.15 - Small bug fix for blank screen when launching the game.

Change Log: -Implemented possible fix for issue where after launching the game it would be stuck in a blank screen. -Localization improvements and fixes.

May 28, 2022
Update v1.14

Change Log: -Fixed bug in the Monstrous Beast Cave where stamina was still active even after clearing the area of all enemies. -The selected inventory tab is now reset to "All Items" when starting a n

May 23, 2022
Update v1.13

Change Log: -Updated Swedish language. Thank you, Simon Tessem (Gnydsmelt). -Fixed issue with being able to go back to sleep after waking up in the apartment in Randomizer mode. -Added option to disab

May 22, 2022
Update v1.12

A small update that adds the Swedish language. Change Log: -Added Swedish language. Thank you, Simon Tessem (Gnydsmelt). -Fixed issue with flush sound for toilets not being affected by the sound effec

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresAction, Adventure, Indie
Player tagsAction · Horror · FPS · Survival Horror · Zombies · First-Person · 1990's · Action-Adventure · Indie · Gore · Retro · Violent (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Cloud · Family Sharing
LanguagesEnglish, French, Polish, Russian, Simplified Chinese, Traditional Chinese, Spanish - Latin America, Portuguese - Brazil, Italian, German, Czech, Hungarian, Turkish, Norwegian, Swedish
Achievements16
Estimated owners100,000 – 200,000 (SteamSpy)
Minimum system requirements (PC)

Minimum: OS *: Windows 7 Processor: Dual Core 2ghz Memory: 2 GB RAM Graphics: DirectX 10 Compatible graphics DirectX: Version 10 Storage: 1 GB available space