365 days of Aliens
In the Gamecube game Pikmin you played as Captain Olimar, whose spaceship crash landed on the earth like planet. Due to oxygen being poisonous to Olimar he had to plan his escape from the planet in 30 days. Depending on how many goals you accomplished through the course of the game you would get a couple different endings. Either Olimar would die (but be resurrected as a Pikmin yourself) or fly back to his planet while the Pikmin try to figure out how to satiate their bloodlust.