Star Wars Battlefront
Europa: Caves (or "Gamma Force: Caves," if you're referencing the earlier version) is an interior-only map set in a series of caves, made from the original Hoth tunnels.
Like the previous two iterations, Europa: Bridge is essentially one big bridge suspended over a chasm. It's a mostly straight fight across the bridge, although there are various objects scattered here and there.
As the end of the Clone War draws near some CIS leaders feared punishment from the Republic should there side lose. Plans were drawn up for a secret hidout on a distant planet out of the Republic's influence.
BFS, heroassault, and RhVC maps made by guys you know but now set to take place on cloud city, if you want the original map file it is left in map but renamed with a 9 in front of the file name.
Dispite heavy resistance from the CIS, the Republic eventually broke through their lines and pushed on toward the large bridge that connected to the CIS base. The CIS was waiting for them.
This is the sequel to Europa: Ground Assault.