# Games like Zombie Panic! Source

> The closest matches to Zombie Panic! Source: BrainBread 2, Contagion, Killing Floor, Left 4 Dead 2, and Masked Forces: Zombie Survival. 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. [BrainBread 2](https://imho.run/games/346330/brainbread-2) — Also Zombies, like Zombie Panic! Source. 2,085 Steam reviews, 74% positive. [Steam](https://store.steampowered.com/app/346330/)
2. [Contagion](https://imho.run/games/238430/contagion) — A frequent pick in Zombie Panic! Source players' libraries, and another Action. 5,535 Steam reviews, 73% positive. [Steam](https://store.steampowered.com/app/238430/)
3. [Killing Floor](https://imho.run/games/1250/killing-floor) — Shares wave based survival with Zombie Panic! Source. 21,597 Steam reviews, 96% positive. [Steam](https://store.steampowered.com/app/1250/)
4. [Left 4 Dead 2](https://imho.run/games/550/left-4-dead-2) — Also Team-Based and Zombies, like Zombie Panic! Source. 226,496 Steam reviews, 98% positive. [Steam](https://store.steampowered.com/app/550/)
5. [Masked Forces: Zombie Survival](https://imho.run/games/654850/masked-forces-zombie-survival) — Shares wave based survival with Zombie Panic! Source. 174 Steam reviews, 74% positive. [Steam](https://store.steampowered.com/app/654850/)
6. [Back 4 Blood](https://imho.run/games/924970/back-4-blood) — Also Zombies, like Zombie Panic! Source. 25,164 Steam reviews, 72% positive. [Steam](https://store.steampowered.com/app/924970/)
7. [Codename CURE](https://imho.run/games/355180/codename-cure) — Also Zombies, like Zombie Panic! Source. 7,536 Steam reviews, 84% positive. [Steam](https://store.steampowered.com/app/355180/)
8. [No More Room in Hell](https://imho.run/games/224260/no-more-room-in-hell) — Also Zombies, like Zombie Panic! Source. 30,312 Steam reviews, 89% positive. [Steam](https://store.steampowered.com/app/224260/)
9. [Nasty Zombies](https://imho.run/games/2851700/nasty-zombies) — Shares wave based survival with Zombie Panic! Source. 168 Steam reviews, 98% positive. [Steam](https://store.steampowered.com/app/2851700/)
10. [CS2D](https://imho.run/games/666220/cs2d) — Also Zombies, like Zombie Panic! Source. 2,547 Steam reviews, 90% positive. [Steam](https://store.steampowered.com/app/666220/)
11. [Blood: Refreshed Supply™](https://imho.run/games/3884520/blood-refreshed-supply) — Same retro mood as Zombie Panic! Source. 494 Steam reviews, 66% positive. [Steam](https://store.steampowered.com/app/3884520/)
12. [The Haunted: Hells Reach](https://imho.run/games/43190/the-haunted-hells-reach) — Shares wave based survival with Zombie Panic! Source. 266 Steam reviews, 83% positive. [Steam](https://store.steampowered.com/app/43190/)
13. [Yet Another Zombie Defense](https://imho.run/games/270550/yet-another-zombie-defense) — Also Zombies, like Zombie Panic! Source. 5,822 Steam reviews, 86% positive. [Steam](https://store.steampowered.com/app/270550/)
14. [Z1 Battle Royale](https://imho.run/games/433850/z1-battle-royale) — Also Zombies, like Zombie Panic! Source. 56,854 Steam reviews, 50% positive. [Steam](https://store.steampowered.com/app/433850/)
15. [Quake](https://imho.run/games/2310/quake) — Same retro mood as Zombie Panic! Source. 9,755 Steam reviews, 96% positive. [Steam](https://store.steampowered.com/app/2310/)
16. [Call of Duty®: Black Ops III](https://imho.run/games/311210/call-of-duty-black-ops-iii) — Also Zombies, like Zombie Panic! Source. 115,801 Steam reviews, 90% positive. [Steam](https://store.steampowered.com/app/311210/)
17. [Dying Light](https://imho.run/games/239140/dying-light) — A frequent pick in Zombie Panic! Source players' libraries, and another RPG. 96,634 Steam reviews, 94% positive. [Steam](https://store.steampowered.com/app/239140/)
18. [Primal Carnage](https://imho.run/games/215470/primal-carnage) — Also Team-Based, like Zombie Panic! Source. 2,525 Steam reviews, 78% positive. [Steam](https://store.steampowered.com/app/215470/)
19. [Pandemic Express - Zombie Escape](https://imho.run/games/939510/pandemic-express-zombie-escape) — Same intense mood as Zombie Panic! Source. 983 Steam reviews, 61% positive. [Steam](https://store.steampowered.com/app/939510/)
20. [Zombie Army 4: Dead War](https://imho.run/games/694280/zombie-army-4-dead-war) — Also Zombies, like Zombie Panic! Source. 2,778 Steam reviews, 86% positive. [Steam](https://store.steampowered.com/app/694280/)
21. [Natural Selection 2](https://imho.run/games/4920/natural-selection-2) — Also Team-Based, like Zombie Panic! Source. 5,398 Steam reviews, 85% positive. [Steam](https://store.steampowered.com/app/4920/)
22. [Sven Co-op](https://imho.run/games/225840/sven-co-op) — Also Team-Based, like Zombie Panic! Source. 15,384 Steam reviews, 93% positive. [Steam](https://store.steampowered.com/app/225840/)
23. [SAS: Zombie Assault 4](https://imho.run/games/678800/sas-zombie-assault-4) — Also Zombies, like Zombie Panic! Source. 5,003 Steam reviews, 85% positive. [Steam](https://store.steampowered.com/app/678800/)
24. [DayZ](https://imho.run/games/221100/dayz) — Also Zombies, like Zombie Panic! Source. 175,514 Steam reviews, 74% positive. [Steam](https://store.steampowered.com/app/221100/)

## 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=17500&n=20
- Co-op games only: https://imho.run/api/agent/games-like?q=17500&n=20&coop=true
- Free games only: https://imho.run/api/agent/games-like?q=17500&n=20&free=true
- Facts about this game: https://imho.run/api/agent/game-facts?q=17500
- This page as markdown: https://imho.run/md/game/17500
- API docs: https://imho.run/developers (OpenAPI: https://imho.run/openapi.json, MCP: https://imho.run/mcp)

## About Zombie Panic! Source

Zombie Panic! Source is a free-to-play asymmetric co-op first-person shooter released in 2008 by the Zombie Panic! Team. Players choose between surviving as human or spawning as a zombie, with infection mechanics that cause newly killed humans to rise as undead, making every death a tactical shift. The game features civilian AI, bot populations, wave-based survival, and round timers that create escalating pressure throughout matches. Players describe the multiplayer action as intense and competitive, with the infection system making zombies feel alive rather than scripted. Reviewers highlight the legendary music and note that playing with friends is a blast. Currently marked as playable on Steam Deck, it holds an 86% positive rating from 3795 Steam reviews.

## Game info

- **AppID:** 17500
- **Developer:** Zombie Panic! Team
- **Publisher:** Zombie Panic! Team
- **Genres:** Action, Indie, Adventure, Free To Play, Casual
- **Categories:** Multi-player, Includes Source SDK, Includes level editor, Mods, Steam Achievements, Steam Cloud, Steam Workshop, Online PvP, Online Co-op, PvP, Mods (require HL2), Camera Comfort, Stereo Sound, Surround Sound, Playable without Timed Input, Valve Anti-Cheat enabled, Co-op
- **Released:** Oct 3, 2008
- **Free to play:** yes
- **Platforms:** windows, linux

## Links

- [Full page with filters and more lists](https://imho.run/games/17500/zombie-panic-source)
- [The same list as JSON, no key](https://imho.run/api/agent/games-like?q=17500&n=20) — the API for AI assistants, see https://imho.run/developers
- [Steam store](https://store.steampowered.com/app/17500/)
- [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/17500/zombie-panic-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.*