zm_effect — Counter-Strike 1.6 Zombie Mod
Free Zombie Mod · No download · No install · Instant play
zm_effect is a Counter-Strike 1.6 Zombie Mod map. It sits in the zm_* family of zombie-survival maps — one of 698 zm_* maps here with a real overview. Across public CS 1.6 servers scanned March–July 2026, zm_effect was seen running on 19 different servers, with as many as 26 players online at once. You'll find the full zm_effect overview here — play it free in the browser, nothing to download or install.
Play zm_effect nowBrowse serversAbout zm_effect
“Map made for the CS1.6 Zombie Biohazard. Happy New Year”
| Author | dezax |
|---|---|
| Category | Zombie Mod |
| Released | December 28, 2010 |
| Version | 0.01 |
| Downloads | 1,994 |
| File size | 382 KB |
| License | CC BY-NC-ND 4.0 |
| Download | zm_effect on GameBanana |
| Source | GameBanana |
How zm_effect plays
zm_effect 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_effect
During our March–July 2026 scan of the public master list, zm_effect was seen on 19 Counter-Strike 1.6 servers, with as many as 26 players on at once. The servers below ran zm_effect 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_effect | |
|---|---|---|---|
| [ZC] Zombie Classic (2008) | — | July 21, 2026 | Play → |
| CLARION ZM Army [TEST] | — | July 21, 2026 | Play → |
| Zombie Plague 4.3 Classic, balanced and fun! | — | July 21, 2026 | Play → |
| Zombie Plague [DeathMatch] | up to 1 | July 21, 2026 | Play → |
| Zombie Plague + WAR3FT 31lvl *New Modes* | up to 3 | July 21, 2026 | Play → |
| Counter-Strike 1.6 server | — | July 21, 2026 | Play → |
| Red Protocol | — | July 21, 2026 | Play → |
| Counter-Strike 1.6 server | up to 26 | July 20, 2026 | Play → |
| BleckMesa BIOHAZARD [New Operation Zone]®™ | — | July 20, 2026 | Play → |
| [MILF] Krtole Zombie Apocalypse | — | July 20, 2026 | Play → |
| .::Silent Killer Community [ZOMBIE PLAGUE DARK NIGHT]::. | up to 4 | July 17, 2026 | Play → |
| LVL [UA] | up to 1 | July 14, 2026 | Play → |
See who's playing zm_effect right now → — a live list, updated continuously.