On 1 servers with real players. Checked 19:17 UTC.
am_basement 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_basement was the #1827 map on CS2 community servers, with <1 real players on it at any moment on average - 0% of everyone playing. It ran on about 0 servers with real players at a time. Right now 17 people play it on 1 servers, most of them on servers in Poland. It is busiest on Tuesday around 19:00 UTC and quietest on Monday around 00:00 UTC.
Right now 17, 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 Tuesday around 19:00 UTC. The grid above shows every hour of the week in your own time zone.
The busiest right now: GRACZ1.PL [ARENA 1VS1 #1] SKINY | NOZE | REKAWICE (17 players). The full list is under "Servers running it now", and every server has its own page with its history.
de_mirage43,473 players on average
de_dust217,938 players on average
sandstone_fb14,491 players on average
de_mirage_fps6,355 players on average
awp_lego_25,461 players on average
awp_lego_2_fb4,851 players on average
de_mirage_christmas2,863 players on average
<null>1,278 players on average
bhop_emevaelx31,054 players on average
duels_mirage_1x11,025 players on average
de_inferno890 players on average
de_nuke767 players on average
PL