On 0 servers with real players, out of 1 Steam servers that run it now, fakes and empty ones included. Checked 21:07 UTC.
surf_sentient is a surf map: you slide along sloped ramps instead of running. 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 surf_sentient was the #2203 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 0 people play it on 0 servers. It is busiest on Thursday around 17:00 UTC and quietest on Monday around 00:00 UTC.
Right now 0, on 0 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 Thursday around 17:00 UTC. The grid above shows every hour of the week in your own time zone.
The busiest right now: CS2 SURF #79 [FR] — CYBERSHOKE.NET (TIER 3-4 - MEDIUM) (0 players). The full list is under "Servers running it now", and every server has its own page with its history.
de_mirage43,367 players on average
de_dust217,962 players on average
sandstone_fb14,458 players on average
de_mirage_fps6,343 players on average
awp_lego_25,459 players on average
awp_lego_2_fb4,832 players on average
de_mirage_christmas2,865 players on average
<null>1,275 players on average
bhop_emevaelx31,057 players on average
duels_mirage_1x11,029 players on average
de_inferno892 players on average
de_nuke749 players on average