Concept art has emerged of cancelled projects that were reportedly being worked on within Retro Studios, the developer of the Metroid Prime trilogy, Donkey Kong Country Returns, and Tropical Freeze. The two games were in pre-development between 2005 and 2008, likely for the Wii and DS, respectively.
An example of one of Sammy Hall's art pieces
Metroid fansite Shinesparkers has dug up these pieces from the ArtStation page of Sammy Hall, a former Retro Studios pre-production artist. It reveals art for a cancelled Sheik game, which was to be an action-RPG title set during a time where Ganon is being birthed by the Dark Gerudo. It sounds like it would have been a slightly darker take on the Zelda franchise.
This concept art is not necessarily indicative of how the final game would have looked, but it gives some insight into what was being considered and worked on. These are just a few examples of Hall's work; the rest appear on his ArtStation page, and each one comes with commentary about the piece. It's absolutely gorgeous stuff.
