We set out with the game being playable on mobile (not necessarily built for mobile though) and I figured I'd try a build for it. It "works", although it has an annoying bug where closing the upgrade windows are quite difficult. Might work on an update to this and make it fully playable on mobile, although right now it's definitely do-able.

If you haven't checked out Mad Trax you can find it here: https://ldjam.com/events/ludum-dare/39/mad-trax/ Mad Trax is a Tower Defense / Resource Management / Infinite Runner hybrid