God of Blades is a great take on the auto-runner genre, and the fact that it absolutely commits to its theme is part of what makes it so much fun. There's nothing quite like it on the App Store, and it's fun to boot.
Like a fevered nightmare trip through the covers of 70s prog-rock bands and classic pulp-fiction, God of Blades is a beautifully presented and other-worldly experience, but is likewise just as short-lived as you expend its limited content and variety of combat.
God of Blades is proof that games can be great without needing to reinvent the wheel every time out. It's simple on the surface but deep where it counts, and you can't ask for much more out of a mobile game than that.