zm_gc_biohazard_base — Counter-Strike 1.6 Zombie Mod
Free Zombie Mod · No download · No install · Instant play
zm_gc_biohazard_base is a Zombie Mod map for Counter-Strike 1.6. As a zm_* map, it joins 697 other zombie-survival maps in that family that we host with a real overview. Our March–July 2026 sweep of public CS 1.6 servers found zm_gc_biohazard_base live on 7 of them, peaking at 7 players at once. The full zm_gc_biohazard_base overview is on this page; play it free right in your browser, no install needed.
Play zm_gc_biohazard_base nowBrowse serversAbout zm_gc_biohazard_base
| Author | ronni |
|---|---|
| Category | Zombie Mod |
| Released | September 9, 2020 |
| Version | 1.0 |
| Downloads | 234 |
| File size | 1.4 MB |
| License | CC BY-NC-ND 4.0 |
| Download | zm_gc_biohazard_base on GameBanana |
| Source | GameBanana |
How zm_gc_biohazard_base plays
zm_gc_biohazard_base 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_gc_biohazard_base
During our March–July 2026 scan of the public master list, zm_gc_biohazard_base was seen on 7 Counter-Strike 1.6 servers, with as many as 7 players on at once. The servers below ran zm_gc_biohazard_base 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_gc_biohazard_base | |
|---|---|---|---|
| [Indigo-Server] ZOMBIE~INFECTION! | up to 3 | July 21, 2026 | Play → |
| Counter-Strike 1.6 server | up to 7 | July 21, 2026 | Play → |
| 1000FPS + FastDL | up to 3 | July 21, 2026 | Play → |
| Counter-Strike 1.6 server | — | July 2, 2026 | Play → |
| Зомби Сервер | — | June 20, 2026 | Play → |
| Unknown | — | May 18, 2026 | Play → |
| |sS| Biohazard | — | May 18, 2026 | Play → |
See who's playing zm_gc_biohazard_base right now → — a live list, updated continuously.