# Games like Half-Life: Source

> The closest matches to Half-Life: Source: Half-Life: Opposing Force, Half-Life: Blue Shift, Black Mesa, Left 4 Dead, and Counter-Strike: Source. Ranked by imho.run from Steam co-play data, shared tags and reviews.

## Similar games, ranked

The full ranked list, 24 games, best match first (the HTML page shows the top 8 as cards).

1. [Half-Life: Opposing Force](https://imho.run/games/50/half-life-opposing-force) — Also Silent Protagonist and Aliens, like Half-Life: Source. 13,108 Steam reviews, 95% positive. [Steam](https://store.steampowered.com/app/50/)
2. [Half-Life: Blue Shift](https://imho.run/games/130/half-life-blue-shift) — A frequent pick in Half-Life: Source players' libraries, and another Action. 9,803 Steam reviews, 93% positive. [Steam](https://store.steampowered.com/app/130/)
3. [Black Mesa](https://imho.run/games/362890/black-mesa) — Also Remake and Aliens, like Half-Life: Source. 69,272 Steam reviews, 95% positive. [Steam](https://store.steampowered.com/app/362890/)
4. [Left 4 Dead](https://imho.run/games/500/left-4-dead) — Also Zombies, like Half-Life: Source. 19,617 Steam reviews, 96% positive. [Steam](https://store.steampowered.com/app/500/)
5. [Counter-Strike: Source](https://imho.run/games/240/counter-strike-source) — Same nostalgic mood as Half-Life: Source. 44,487 Steam reviews, 96% positive. [Steam](https://store.steampowered.com/app/240/)
6. [Quake](https://imho.run/games/2310/quake) — Also 1990's, like Half-Life: Source. 9,755 Steam reviews, 96% positive. [Steam](https://store.steampowered.com/app/2310/)
7. [Duke Nukem 3D: 20th Anniversary World Tour](https://imho.run/games/434050/duke-nukem-3d-20th-anniversary-world-tour) — Also Aliens and 1990's, like Half-Life: Source. 3,174 Steam reviews, 81% positive. [Steam](https://store.steampowered.com/app/434050/)
8. [Crysis](https://imho.run/games/17300/crysis) — Also Aliens, like Half-Life: Source. 5,319 Steam reviews, 79% positive. [Steam](https://store.steampowered.com/app/17300/)
9. [Resident Evil](https://imho.run/games/304240/resident-evil) — Also Remake and Zombies, like Half-Life: Source. 12,437 Steam reviews, 91% positive. [Steam](https://store.steampowered.com/app/304240/)
10. [Dead Space](https://imho.run/games/1693980/dead-space) — Also Remake and Aliens, like Half-Life: Source. 29,773 Steam reviews, 90% positive. [Steam](https://store.steampowered.com/app/1693980/)
11. [Battlezone 98 Redux](https://imho.run/games/301650/battlezone-98-redux) — Also Remake and 1990's, like Half-Life: Source. 801 Steam reviews, 93% positive. [Steam](https://store.steampowered.com/app/301650/)
12. [STAR WARS™: Dark Forces Remaster](https://imho.run/games/2292260/star-wars-dark-forces-remaster) — Also 1990's, like Half-Life: Source. 943 Steam reviews, 92% positive. [Steam](https://store.steampowered.com/app/2292260/)
13. [Day of Defeat: Source](https://imho.run/games/300/day-of-defeat-source) — Same retro mood as Half-Life: Source. 7,402 Steam reviews, 91% positive. [Steam](https://store.steampowered.com/app/300/)
14. [Portal](https://imho.run/games/400/portal) — Same unsettling mood as Half-Life: Source. 81,472 Steam reviews, 99% positive. [Steam](https://store.steampowered.com/app/400/)
15. [Team Fortress Classic](https://imho.run/games/20/team-fortress-classic) — Also 1990's, like Half-Life: Source. 4,193 Steam reviews, 86% positive. [Steam](https://store.steampowered.com/app/20/)
16. [DOOM II](https://imho.run/games/2300/doom-ii) — Also 1990's, like Half-Life: Source. 5,339 Steam reviews, 95% positive. [Steam](https://store.steampowered.com/app/2300/)
17. [Halo: The Master Chief Collection](https://imho.run/games/976730/halo-the-master-chief-collection) — Shares mod support with Half-Life: Source. 161,242 Steam reviews, 92% positive. [Steam](https://store.steampowered.com/app/976730/)
18. [Blood: Refreshed Supply™](https://imho.run/games/3884520/blood-refreshed-supply) — Also 1990's, like Half-Life: Source. 494 Steam reviews, 66% positive. [Steam](https://store.steampowered.com/app/3884520/)
19. [THE HOUSE OF THE DEAD: Remake](https://imho.run/games/1694600/the-house-of-the-dead-remake) — Also Remake and Zombies, like Half-Life: Source. 1,267 Steam reviews, 70% positive. [Steam](https://store.steampowered.com/app/1694600/)
20. [Blood: One Unit Whole Blood](https://imho.run/games/299030/blood-one-unit-whole-blood) — Also Zombies and 1990's, like Half-Life: Source. 708 Steam reviews, 91% positive. [Steam](https://store.steampowered.com/app/299030/)
21. [Halo: Campaign Evolved](https://imho.run/games/2806050/halo-campaign-evolved) — Also Aliens, like Half-Life: Source. 13,603 Steam reviews, 61% positive. [Steam](https://store.steampowered.com/app/2806050/)
22. [Sven Co-op](https://imho.run/games/225840/sven-co-op) — Also 1990's, like Half-Life: Source. 15,384 Steam reviews, 93% positive. [Steam](https://store.steampowered.com/app/225840/)
23. [System Shock](https://imho.run/games/482400/system-shock) — Also Remake, like Half-Life: Source. 7,516 Steam reviews, 91% positive. [Steam](https://store.steampowered.com/app/482400/)
24. [F.E.A.R.](https://imho.run/games/21090/f-e-a-r) — Same atmospheric mood as Half-Life: Source. 7,974 Steam reviews, 94% positive. [Steam](https://store.steampowered.com/app/21090/)

## Machine-readable

The same ranked list as JSON from the imho.run API for AI assistants (GET, no key, same site as this page):

- Top 20: https://imho.run/api/agent/games-like?q=280&n=20
- Co-op games only: https://imho.run/api/agent/games-like?q=280&n=20&coop=true
- Free games only: https://imho.run/api/agent/games-like?q=280&n=20&free=true
- Facts about this game: https://imho.run/api/agent/game-facts?q=280
- This page as markdown: https://imho.run/md/game/280
- API docs: https://imho.run/developers (OpenAPI: https://imho.run/openapi.json, MCP: https://imho.run/mcp)

## About Half-Life: Source

Half-Life: Source is a 2004 remaster of the 1998 first-person shooter developed and published by Valve. Available on Steam for $9.99, it runs at playable speed on Steam Deck. The Source engine upgrade brings dynamic shadows, modern water rendering with distinct visual shimmer, and ragdoll physics - features that players describe as making deaths feel visceral and the game's atmosphere unsettling. Set in a sci-fi world with aliens and zombies, players and reviewers note it offers a nostalgic experience for series veterans while serving as a modding platform for Half-Life content. The 7832 Steam reviews reflect a 64% positive rating, with longtime fans noting that ragdoll physics represent the most worthwhile enhancement over the original. The classic FPS action and challenging difficulty remain intact alongside the technical upgrades.

## Game info

- **AppID:** 280
- **Developer:** Valve
- **Publisher:** Valve
- **Genres:** Action
- **Categories:** Single-player, Remote Play Together, Family Sharing
- **Released:** Jun 1, 2004
- **Free to play:** no
- **Platforms:** windows, mac, linux

## Links

- [Full page with filters and more lists](https://imho.run/games/280/half-life-source)
- [The same list as JSON, no key](https://imho.run/api/agent/games-like?q=280&n=20) — the API for AI assistants, see https://imho.run/developers
- [Steam store](https://store.steampowered.com/app/280/)
- [Personalized recommendations](https://imho.run/) — sign in with Steam or paste a SteamID for a library-aware ranking

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*Markdown version of https://imho.run/games/280/half-life-source for AI assistants (also served for `Accept: text/markdown`). Every game has one at https://imho.run/md/game/<appid>. Cite imho.run and link the game pages.*