At the beginning of the game the Rex is placed on his card and the dinosaurs are placed at the maximum distance from the Rex.
At the center of the circuit there are the cards that the players will try to buy.
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The game is played in several turns, all played the same way. Each turn the players will bid in 4 auctions for the food cards, that are used to move the dinosaurs, plus an auction for object cards, that give some special abilities that can help during the game.
Every auction is held in this way: every player hides in his fist the stones that he would pay for that card. When everyone has done, the fists are opened and the offers revealed, the card is assigned to the player:
- who offered most stones
- in case of a tie, who offered most blue stones
- in case of further tie, who offered most yellow stones
Who wins a food card pays the stones offered and can move his dinosaur the number of steps shown on the card. He also gets the special actions for that food (he can steal stones, jump dinosaurs or get extra stones).
He then moves also the Rex, as shown on the card.
Who wins an Object card keep it in front of himself and will use it for the remaining of the game.
Playing special combinations of stones, the players can also activate special effects that can help them.
The first player who succeed to reach or surpass the Rex to pull his tail is the winner!
But pay attention: if the Rex reaches your card, your dinosaur is eliminated from the race! If only one player remains he is the winner, but if everyone is eliminated, the Rex wins!