this is a great filler. You play a time traveler attempting to be the first to get home. There are three ways to win- collect specific artifacts, have ten cards in hand at the end of your turn, or meet specific timeline requirements. The third option is the core of the game. There are 32 time cards arrayed in a grid on the table. Each card represents a year. Some years can be directly modified by playing cards in your hand. These are called Linchpin cards. Flipping a Linchpin results in a change in history. What happens if Lincoln isn't assassinated? Or the Challenger never blew up? Each change in history has a ripple effect. Events in future years can be changes, creating paradoxes in time. These paradoxes can be "patched" with different events which the players can try to use to get home.