I mean, the Android version is more surprising, especially since the controls don't favor the touch screen. Though I've played OpenTTD on a tablet and it was pretty good, if a bit involved.

OpenRCT2 seems to use SDL, just like OpenTTD—which apparently allows for relatively easy porting on various platforms. Sergii Pylypenko (`pelya` on Github) ported several SDL games on Android aside from OpenTTD—e.g. Ur-Quan Masters.