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