zm_biohazard — Counter-Strike 1.6 Zombie Mod
Free Zombie Mod · No download · No install · Instant play
zm_biohazard is a Zombie Mod map for Counter-Strike 1.6. It belongs to the zm_* zombie-survival family; we carry 698 zm_* maps in all, each with a genuine overview. zm_biohazard turned up on a public CS 1.6 server during our March–July 2026 scan. The full zm_biohazard overview is on this page; play it free right in your browser, no install needed.
Play zm_biohazard nowBrowse serversAbout zm_biohazard
| Author | DimeX |
|---|---|
| Category | Zombie Mod |
| Released | October 10, 2010 |
| Version | 1.0 |
| Downloads | 1,994 |
| File size | 3.2 MB |
| License | CC BY-NC-ND 4.0 |
| Download | zm_biohazard on GameBanana |
| Source | GameBanana |
How zm_biohazard plays
zm_biohazard is a Zombie Mod map. Humans buy weapons and weld or block chokepoints to hold off the horde; zombies use speed and knockback-resistant health to break the line. Survive to the end of the round as a human, or infect everyone as a zombie. On Combat Skirmish it runs directly in your browser through WebAssembly — click Play and you are dropped straight onto a live public server, no Steam account or download required.
Counter-Strike 1.6 servers that play zm_biohazard
During our March–July 2026 scan of the public master list, zm_biohazard was seen on 1 Counter-Strike 1.6 server. The servers below ran zm_biohazard at some point in that window — ordered by how recently we last saw them on it (shown in Last seen). A server may be on another map right now; clicking Play connects you to it as it is, straight from your browser — no Steam, no download.
| Server | Peak players | Last seen on zm_biohazard | |
|---|---|---|---|
| ZM MOD | — | July 21, 2026 | Play → |
See who's playing zm_biohazard right now → — a live list, updated continuously.