On 1 servers with real players, out of 3 Steam servers that run it now, fakes and empty ones included. Checked 13:36 UTC.
kz_topsecret is a KZ (climb) map: you jump your way to the end as fast as you can. It is not one of the maps that come with the game, so servers send it to players from the Workshop when they join.
Over the last 30 days kz_topsecret was the #656 map on CS2 community servers, with 2 real players on it at any moment on average - 0% of everyone playing. It ran on about <1 servers with real players at a time. Right now 4 people play it on 1 servers, most of them on servers in Russia. It is busiest on Tuesday around 14:00 UTC and quietest on Monday around 03:00 UTC.
Right now 4, on 1 servers from the Steam server list. Over the last 30 days it had 2 real players on average at any moment. Fake servers and bots are not counted, and Valve matchmaking is not in the list.
On Tuesday around 14:00 UTC. The grid above shows every hour of the week in your own time zone.
The busiest right now: CS2 KZ #61 [RU] — CYBERSHOKE.NET (TIER 4-5 - MEDIUM) (4 players), CS2 KZ #54 [DE] — CYBERSHOKE.NET (TIER 4-5 - MEDIUM) (0 players), Praetor KZ | NA #3 (0 players). The full list is under "Servers running it now", and every server has its own page with its history.
de_mirage43,256 players on average
de_dust217,879 players on average
sandstone_fb14,478 players on average
de_mirage_fps6,340 players on average
awp_lego_25,442 players on average
awp_lego_2_fb4,849 players on average
de_mirage_christmas2,853 players on average
<null>1,274 players on average
bhop_emevaelx31,054 players on average
duels_mirage_1x11,001 players on average
de_inferno889 players on average
de_nuke763 players on average
RU