“Pikmin 3 Deluxe” opens on a note of exhaustion. The inhabitants of a planet named Koppai have almost run out of food, the opening monologue tells us, due to “a booming population, a booming appetite and a basic lack of planning.” After sending out a fleet of scout ships to scour the galaxy for planets that haven’t yet depleted their ecosystems, only one shows any promise, the lush and Earthlike PNF-404. With the future of their species at stake, three diminutive astronauts — Brittany, Alph, and Captain Charlie — set off in a treehouse-sized spaceship, hoping to filch every last piece of fruit they can find on PNF-404’s surface.