I found out about it in a Pocket Gamer article. Currently Android-only, coming to iOS soon.
I love the crisp, psychedelic voxel graphics, the sense of speed it gives off and the absolute addictiveness of it. Plus, it's free with very unobtrusive in-app purchases (I made some to thank the devs for this awesome game but you can totally play this without paying a dime).
HERE it is!
DISCLAIMER: I am not part of the dev team or related to the devs in any way. i just LOVE this game!