| Future | |
| Far Future | |
| Past | |
| Ancient Civilization | |
| Renaissance Era | |
| Victorian Era | |
| Middle Ages | |
| Classical Antiquity | |
| Age of Enlightenment | |
| Roaring Twenties | |
| Space Age | |
| Industrial Revolution | |
| Iron Age | |
| Age of Exploration | |
| Age of Sail | |
| Jazz Age | |
| Ice Age | |
| Gilded Age | |
| Feudal Era | |
| Age of Discovery | |
| Information Age | |
| Atomic Age | |
| Jazz Age | |
| Cyber Age | |
| Viking Age | |
| Age of Kings | |
| Digital Era | |
| Tribal Age | |
| Age of Revolutions | |
| Atomic Age | |
| Computer Age | |
| Colonial Era | |
| Romantic Era | |
| Middle Kingdom | |
| Age of Empires | |
| Space Age | |
| Victorian Era | |
| Postwar Era | |
| Age of Reason | |
| Dinosaur Age | |
| Golden Age | |
| Stone Age | |
| Jazz Age | |
| Enlightenment Era | |
| Age of Heroes | |
| Renaissance Era | |
| Middle Kingdom | |
| Age of Rebellion | |
| Industrial Age | |
| Cyber Age | |
| Information Age | |
| Post-Modern Era | |
| Age of Wisdom | |
| Imperial Era | |