On 0 servers with real players. Checked 05:36 UTC.
am_onepiece 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_onepiece was the #146 map on CS2 community servers, with 35 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 Tuesday around 01:00 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 35 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 01:00 UTC. The grid above shows every hour of the week in your own time zone.
Nobody is playing it right now. Check the hour grid to see when people usually do.
de_mirage42,972 players on average
de_dust217,814 players on average
sandstone_fb14,338 players on average
de_mirage_fps6,284 players on average
awp_lego_25,401 players on average
awp_lego_2_fb4,796 players on average
de_mirage_christmas2,833 players on average
<null>1,273 players on average
bhop_emevaelx31,047 players on average
duels_mirage_1x11,015 players on average
de_inferno880 players on average
de_nuke751 players on average