The PixelJunk series has always been quite unique since every game is totally different from one another. You can go from Tower Defence with PixelJunk Monsters to a 2D shoot-em-up with PixelJunk Shooter.
In a surprise move, it has been announced that the series is now headed to iOS and Android with Eden Obscura, a new entry in the PixelJunk Eden series. This one was also quite peculiar. In it, you had to grow gardens in a colorful but minimalist world:
Eden Obscura sounds like a brand new entry in the series, specifically built with mobile in mind. It should be released later this year.