Noomix is an upcoming 3rd person platform shooter with an interesting art style.
Game is still in development
The Iconoclasts is a great looking action platform shooter adventure with a super smooth engine that offers some really awesome pixel art.
Also consider to check out some of the other games by the developer Konjak! Especially
The Legend Of Princess and Noitu Love 2.
Glorkbot’s Mini Adventure is an upcoming platform shooter with charming low res pixel graphics by Pixeljam (the creators of Dino Run, Gamma Bros and many other games) where you explore one big level and shoot stuff.
Game is still in Development (No Demo available)
Mercenary Kings is the upcoming platform shooter by the creators of Wizorb that shares similarities with the Metal Slug series. The developers just confirmed a Steam release. Moreover they can be supported via Kickstarter.
Game is still in development (No Demo available)
Intrusion 2 is a physics based platform shooter. Collect different weapons, interact with the environment, fight against big bosses and ride on a huge wolf… Oh and you can also jump into a sword wielding robo suit!