The story of the "old version" of begins in April 2012, when players were first introduced to a charming, hidden world through a mysterious dimensional portal. The Portal to a Prehistoric World

The premise remains the same: you discover a portal to a prehistoric world filled with bearded, friendly cavemen, and you build a village. However, the focused almost entirely on exploration and expansion.

The soundtrack is where the old version truly shines. It featured a —a gentle, melodic tune with pan flutes and soft percussion. It was hypnotic and relaxing. Newer versions have multiple tracks, but they lack that signature "lost world" lullaby.