. . . "are few, and the only ways to collect food are hunting and foraging. Players in the Prehistoric Age can advance to the Stone Age for a substantial amount of Food. The number of units required depends on the circumstances. In a typical scenario, the advancement costs 750 Food , while in a Random Map Game the number is usually 1122 Food . It also takes 125 Seconds to epoch up to the Stone Age."@en . . "Empire Earth/Prehistoric Age"@en . . . . . "are few, and the only ways to collect food are hunting and foraging. Players in the Prehistoric Age can advance to the Stone Age for a substantial amount of Food. The number of units required depends on the circumstances. In a typical scenario, the advancement costs 750 Food , while in a Random Map Game the number is usually 1122 Food . It also takes 125 Seconds to epoch up to the Stone Age."@en .