The "v1095" designation typically refers to a specific build of the game used by the modding community to bridge the gap between the 2007 "Orange Box" era and modern TF2.
Battles aren't just RED vs. BLU; newer maps support four competing teams including GRN and YLW .
Builds like v1095 are frequently used as the base for "Classic" mods that add restored content, such as the Civilian class or the Nail Gun .