Literally endless. There's no way to truly complete it, in the most satisfying way possible. Also, "Try not to cry listening to the minecraft soundtrack, impossible edition"
Not my favorite entry into the Mario series. Both Galaxy games and Sunshine are all far superior games. Not the worst way to spend a few weeks, though.
YOU ARE AN OFFICER OF THE CITIZENS MILITIA. YOU MOVE THROUGH MY STREETS FREELY IN MOTOR CARRIAGES AND ON FOOT. YOU HAVE ACCESS TO THE HIDDEN PLACES. YOU ALSO CIRCULATE AMONG THOSE WHO ARE HIDDEN. I NEED YOU. YOU CAN KEEP ME ON THIS EARTH. BE VIGILANT. I LOVE YOU.
They mean it. Play it, and play it blind. Just be ready for the most open-ended "detective" gave you've ever played. I'd hesitate to call it that. It's in a league of its own.
The Return Obra-Dinn meets point-and-click adventure. Imagine being able to tell such a cohesive story over the course of 10-15 (initially) seemingly unrelated murder scenes. Incredible.