surf_air_arena_v4 is an arena map that was uploaded to GameBanana by Panzerhandschuh on May 19, 2008, though earlier versions exist. Known for its objectiveless, freestyle layout, surf_air_arena_v4 has become a significant influence in the surf community, inspiring maps like surf_flux_arena, surf_quack_v2, and surf_overlook_v3c. Despite its popularity, the map is seen as controversial within the Skial surf community, where some players argue that its lack of a linear surf makes it unsuitable for combat surf servers.