On 4 servers with real players, out of 10 Steam servers that run it now, farms and empty ones included. Checked 22:26 UTC.
91.121.62.188:2701529/32Real players134.19.177.245:2617013/32Real players190.106.131.16:2703111/32Real players151.247.205.218:270158/32Real playerszm_fox is a zombie map, made for Zombie Plague and similar mods. It is not one of the maps that come with the game, so servers send it to players when they join.
Over the last 30 days zm_fox was the #13 map on CS 1.6 Steam servers, with 36 real players on it at any moment on average - 0.7% of everyone playing. It ran on about 3 servers with real players at a time. Right now 61 people play it on 4 servers, most of them on servers in France and the Netherlands. It is busiest on Monday around 14:00 UTC and quietest on Saturday around 10:00 UTC, when about 6.9 times fewer people play it.
Right now 61, on 4 servers from the Steam server list. Over the last 30 days it had 36 real players on average at any moment. Fake servers and bots are not counted.
On Monday around 14:00 UTC. The grid above shows every hour of the week in your own time zone.
The busiest right now: ZP.LEVSAN.COM | Zombie Plague XP Mode, Levels, VIP (29 players), Test Server Developing (13 players), N1 ~ LNJ [Zombie Carnage] [Nightmare] SV #N2: implnj.com:27032 (11 players). The full list is under "Servers running it now", and every server has its own page with its history.
de_dust21,620 players on average
de_inferno204 players on average
de_dust2_2x2116 players on average
de_aztec88 players on average
fy_snow78 players on average
de_nuke69 players on average
de_dust59 players on average
cs_assault53 players on average
de_mirage50 players on average
de_train46 players on average
fy_pool_day45 players on average
zm_foda42 players on average