On 3 servers with real players, out of 4 Steam servers that run it now, fakes and empty ones included. Checked 18:06 UTC.
kz_spire 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_spire was the #516 map on CS2 community servers, with 3 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 17 people play it on 3 servers, most of them on servers in Russia and Kazakhstan. It is busiest on Thursday around 09:00 UTC and quietest on Monday around 08:00 UTC.
Right now 17, on 3 servers from the Steam server list. Over the last 30 days it had 3 real players on average at any moment. Fake servers and bots are not counted, and Valve matchmaking is not in the list.
On Thursday around 09:00 UTC. The grid above shows every hour of the week in your own time zone.
The busiest right now: CS2 KZ #165 [RU] — CYBERSHOKE.NET (TIER 1-3 - EASY) (8 players), CS2 KZ #303 [RU] — CYBERSHOKE.NET (TIER 1-3 - EASY) (7 players), CS2 KZ #149 [KZ] — CYBERSHOKE.NET (TIER 1-3 - EASY) (2 players). The full list is under "Servers running it now", and every server has its own page with its history.
de_mirage43,391 players on average
de_dust217,971 players on average
sandstone_fb14,482 players on average
de_mirage_fps6,350 players on average
awp_lego_25,460 players on average
awp_lego_2_fb4,843 players on average
de_mirage_christmas2,864 players on average
<null>1,275 players on average
bhop_emevaelx31,058 players on average
duels_mirage_1x11,023 players on average
de_inferno891 players on average
de_nuke748 players on average
RU
KZ