On 18 servers with real players, out of 92 Steam servers that run it now, fakes and empty ones included. Checked 00:16 UTC.
45.136.205.64:2802620/64Real players37.230.210.30:2805119/64Real players62.122.215.180:2802617/64Real players185.40.6.68:2804911/64Real players46.174.55.208:270269/64Real players46.174.48.207:280225/64Real players81.163.20.85:280214/64Real players185.40.6.55:280333/64Real players46.174.52.89:280192/64Real players54.36.173.60:280182/64Real players185.40.6.19:280272/64Real players54.37.84.161:280222/64Real players217.182.199.32:280282/64Real players217.182.199.16:280312/64Real players82.115.60.91:280172/64Real players51.89.24.247:280182/64Real players91.103.255.168:280281/64Real players217.182.199.6:280271/64Real playersam_mirage is an arena map for 1v1 duel servers: many small arenas in one map. 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 am_mirage was the #27 map on CS2 community servers, with 272 real players on it at any moment on average - 0.2% of everyone playing. It ran on about 27 servers with real players at a time. Right now 106 people play it on 18 servers, most of them on servers in Russia and Lithuania. It is busiest on Friday around 19:00 UTC and quietest on Wednesday around 22:00 UTC, when about 1,048.4 times fewer people play it.
5% of the servers running it right now are old CS:GO builds, not CS2. Those are shown apart from the CS2 numbers.
Right now 106, on 18 servers from the Steam server list. Over the last 30 days it had 272 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 19:00 UTC. The grid above shows every hour of the week in your own time zone.
The busiest right now: CS2 DUELS | 1v1 #414 [RU] โ CYBERSHOKE.NET (ARENA MAPS, ONLY (20 players), CS2 DUELS | 1v1 #102 [RU] โ CYBERSHOKE.NET (ARENA MAPS) (19 players), CS2 DUELS | 1v1 #408 [RU] โ CYBERSHOKE.NET (ARENA MAPS, ONLY (17 players). The full list is under "Servers running it now", and every server has its own page with its history.
de_mirage43,372 players on average
de_dust217,938 players on average
sandstone_fb14,457 players on average
de_mirage_fps6,347 players on average
awp_lego_25,436 players on average
awp_lego_2_fb4,846 players on average
de_mirage_christmas2,845 players on average
<null>1,272 players on average
bhop_emevaelx31,056 players on average
duels_mirage_1x11,022 players on average
de_inferno911 players on average
de_nuke782 players on average