Wishbone: It's a 4X game with an insane amount of features, most of which can be customized to your specific style of playing. Sadly, the only way to buy it these days (as far as I know) is on iOS and Android, where they recently re-released it. The original version is a PC game though.
Tooms: Do you know if the mobile versions are as good as the original?
To the best of my knowledge, they're the same, only with a slightly altered interface (to make it touchscreen friendly) and with some updated textures. I've been begging them to re-release the original for PC, or even the updated one, but so far I haven't had any luck. I can't really imagine playing it on a touchscreen (although admittedly, it should be very possible given the style of gameplay), and also I think you need a tablet to get the most out of it (which I don't have).