To begin, one card is randomly drawn from those not given to players. This is placed in the middle of the table, date-side up and is the starting point of a chronological line which will slowly be built by players. The first player then chooses one of their cards. If the player thinks that the invention on their card came before that of the initial card, the player places their card to the left of the initial card. The player's card is then turned date-side up. If the player was right, it remains on the table. Otherwise, the card is discarded and a new one must be drawn to replace it. Play proceeds clockwise. The more cards which are correctly played, the harder it is to correctly place new ones.
— In a February 2014 survey, Julie Steinbach, owner of Rainbow Toys in Falmouth, Maine, told TDmonthly that Timeline from Asmodee was a best-selling game at their store.
— David Stelzer, owner of Shananigans in Baltimore, Md., told TDmonthly in an October 2014 survey that Timeline was his store's best-selling tween item.
— In a February 2015 survey, two out of 11 retailers told TDmonthly that Timeline was their best-selling game.