Mode reason. In the competition mode and ranking mode, the balance and fairness of the game are very important. If players are allowed to bring cookies, the balance of the game may be affected, and the advantages and disadvantages of some heroes will also change. Therefore, in order to ensure the fairness and balance of the game, game developers are forbidden to carry cookies in the competition mode and ranking mode. In the LOL game, cookies are an auxiliary prop, which can provide a certain health value and mana recovery effect.