default 0 The one and only default debug campaign 0 GameMenu worlds/Menu.oxw 1 1 2 Demo Mountain Lake worlds/sp_demo_mountain_lake.oxw 1 2 3 Ambush_at_Uranus worlds/sp_level_ambush_at_uranus.oxw 1 3 0 Multiplayer Arena worlds/mp_level_arena.oxw 1 5 0 worlds/mp_level_arena.oxw