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DOOM 3
A massive demonic invasion has overwhelmed the Union Aerospace Corporation's (UAC) Mars Research Facility, leaving only chaos and horror in its wake. As one of only a few survivors, you must fight your way to hell and back against a horde of evil monsters.
View on Steam ↗ Free (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.
“Every time I replay this game it gets better and better. Doom 3 is one of my favourite games. Starting with the horror elements. Unlike most people, I find Doom 3 to be very scary. There are dozens and dozens of tasteful jumpscares, the atmosphere is top-tier and the music is…”
— a player, Steam review · 29 hrs played“Real cool to go back and play this. Wish I could use a controller but this came out on PC before all that. Great entry in the DOOM series. playing with the dark settings is the only way to go! Not allot to say, it is a classic. time tested still holds up. Good story and tons of…”
— a player, Steam review · 6 hrs played“if this game does not piss me off it is pretty fun i could see myself coming back to this again once i forget about what pissed me off in the first place”
— a player, Steam review · 26 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-07-11 11:41 UTC · history via SteamCharts.
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.
Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-20.
| Genres | Action |
| Player tags | Horror · Action · FPS · Sci-fi · Dark · First-Person · Gore · Singleplayer · Classic · Shooter · Demons · Atmospheric (SteamSpy community voting) |
| Features | Single-player · Multi-player · Steam Cloud · Family Sharing |
| Languages | English, German, Italian, Spanish - Spain, French |
| Estimated owners | 500,000 – 1,000,000 (SteamSpy) |
| Official site | http://www.doom3.com/ |
Minimum system requirements (PC)
OS *: Microsoft® Windows® 2000/XP (Does not support Windows Vista/7) Processor: Pentium®IV 1.5 GHz or Athlon® XP 1500+ processor or higher Memory: 384 MB RAM Graphics: 100% DirectX® 9.0b compatible 64MB Hardware Accelerated video card and the lateset drivers DirectX®: DirectX® 9.0b (included) Hard Drive: 2.2GB of uncompressed free hard disk space (plus 400MB for Windows® swap file) Sound: 100% DirectX® 9.0b compatible 16-bit sound card and the latest drivers Multiplayer Requirements: Internet (TCP/IP) and LAN (TCP/IP) play supported, Internet play requires broadband connection and latest drive