I got 422 stars while getting all stars in 8 games (including Remix 1). You need 759 stars (rainbow) to unlock all levels and that may be something I do in the future but I just wanted to play some of it since I didn't play much of it as a kid. If you grew up with NES games then I'm sure the challenges won't be anything special or hard to complete but as someone who's only familiar with the Mario games, some of these challenges are difficult to complete, let alone get 3 stars. This version is a handful of challenges pulled from NES Remix 1 and 2 from the Wii U so it may be best to get those versions for the full experience. While I do like some of the remix challenges, this is a very hard game overall but I understand why it's a good game for some people. I would like to see Nintendo do a SNES Remix!