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.