On 1 servers with real players, out of 4 Steam servers that run it now, fakes and empty ones included. Checked 10:36 UTC.
kz_outback 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_outback was the #818 map on CS2 community servers, with 1 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 South Korea. It is busiest on Friday around 11:00 UTC and quietest on Monday around 02:00 UTC.
Right now 4, on 1 servers from the Steam server list. Over the last 30 days it had 1 real players on average at any moment. Fake servers and bots are not counted, and Valve matchmaking is not in the list.
On Friday around 11:00 UTC. The grid above shows every hour of the week in your own time zone.
The busiest right now: [RSS] KZ 등산서버 초급반(1~4티어) | discord.gg/rssze (4 players), CS2 KZ #209 [RU] — CYBERSHOKE.NET (TIER 1-3 - EASY) (0 players), CS2 KZ #206 [LT] — CYBERSHOKE.NET (TIER 1-3 - EASY) (0 players). The full list is under "Servers running it now", and every server has its own page with its history.
de_mirage43,206 players on average
de_dust217,866 players on average
sandstone_fb14,462 players on average
de_mirage_fps6,334 players on average
awp_lego_25,427 players on average
awp_lego_2_fb4,847 players on average
de_mirage_christmas2,848 players on average
<null>1,274 players on average
bhop_emevaelx31,053 players on average
duels_mirage_1x1998 players on average
de_inferno892 players on average
de_nuke764 players on average
KR