Ancient
Civilization:
Complete the Cenozoic Era to unlock the Ancient Civilization in story puzzle
mode.
Story puzzle and vs. puzzle modes:
Complete all lessons in training mode to unlock both story puzzle and vs.
puzzle mode.
Mesozoic
Era:
Complete the Paleozoic Era to unlock the Mesozoic Era in story puzzle mode.
Cenozoic
Era:
Complete the Mesozoic Era to unlock the Cenozoic Era in story puzzle mode.
Hidden
Future:
Earn a Master rank in all four stages to unlock the Hidden Future in story
puzzle mode.