The phrase "GeoFS on Top" is often used by the GeoFS community to champion the free, browser-based simulator over expensive competitors like Microsoft Flight Simulator (MSFS) or X-Plane . Here is why players might say "GeoFS on Top":
Based on community activities within the GeoFS flight simulator, "geofscon" appears to refer to organized community events or conventions (GeoFS Conventions). A "geofscon top" likely refers to the rankings or award winners from these community-run competitions. geofscon top