zm_biohazard_base — Counter-Strike 1.6 Zombie Mod
Free Zombie Mod · No download · No install · Instant play
zm_biohazard_base is a CS 1.6 map made for Zombie Mod. It belongs to the zm_* zombie-survival family; we carry 698 zm_* maps in all, each with a genuine overview. zm_biohazard_base turned up on a public CS 1.6 server during our March–July 2026 scan. This page carries the full zm_biohazard_base overview image — play it free in your browser, no download, no install.
Were you looking for zm_biohazard? zm_biohazard_base is a server variant of it — the zm_biohazard page has the full overview and map details.
How zm_biohazard_base plays
zm_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_biohazard_base
During our March–July 2026 scan of the public master list, zm_biohazard_base was seen on 1 Counter-Strike 1.6 server. The servers below ran zm_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_biohazard_base | |
|---|---|---|---|
| ZoOmBie•ThuG•LiFe(︻芫=一LvL_Xp_Gold_CSO-Costumes_Svip) | — | July 20, 2026 | Play → |
See who's playing zm_biohazard_base right now → — a live list, updated continuously.