The time limit is divided into thirty days. With the exception of the first day, which lasts until the player finds the first ship part, all days in the game are about thirteen minutes in length. By the end of each day, all Pikmin should be immediately rounded up, work halted, and Olimar must return with the Pikmin to the ship (except for those idle in the landing area). The reason for this is that many of the creatures inhabiting the Pikmin's planet are nocturnal predators and eat all unattended Pikmin on the surface after the sun sets. The game has three different endings, depending on Olimar's progress in collecting ship parts. Collecting all thirty grants the best ending, while collecting at least the twenty-five mandatory parts within the 30-day time limit grants the normal ending. Failing to do so results in Olimar's ship's life support system failing and Olimar will die from oxygen poisoning.