20. The Unlikely Legend of Rusty Pup
The final game on our list, The Unlikely Legend of Rusty Pup, is another Rare homecoming. It's being produced by Gory Detail, a fresh outfit that consists of Chris Seavor and Shawn Pile, the latter who was a programmer on Conker's Bad Fur Day and the former who was that game's director as well as the voice of the titular squirrel. The duo have often expressed desire to work with Nintendo again, and now they're getting their wish with this new Wii U and 3DS project.
Rusty Pup is a 2D platformer in which you don't control the main character but rather manipulate the environment to lead him, as in Lemmings or the later Mario vs. Donkey Kong entries. But just as with Tengami, don't expect the kind of wild slapstick you're accustomed to in past Rare titles — Rusty Pup's is a sad tale and what humor is there is typically of the black variety.
To be honest, it's hard to gauge progress on Rusty Pup, considering how Seavor only ever shares the odd screenshot over Twitter or Vine footage filmed off-screen, though what little he's revealed is very eye-catching. Quite frankly, I'm just excited to see not one but two teams of ex-Rare members making software for Nintendo once again!