Pick 2 Civs to be included in the Lost Worlds Mod
Automaton Civ "evolved" from first probes from Earth sent by ballistic flight
An H.G Wells inspired Martian Civ (Tripods)
Korsars (Pirates) of Pellucidar
Xexots (Bronze Age level Civ) of Pellucidar
Abyssinia
Zulu
Great Zimbabwe
California
Texas
Mongolia
Planet Mongo