Surprisingly I found the best way to play was on the phone. First spend some time on PC to get familiar with mechanics and interface, then switch to mobile. Some things are horrible, like on-screen keyboard frequently obscuring more than half of screen, and some hard to read text. Some things are easier, like swipe to move and a toolbar with recent key shortcuts.

The thing that makes it worthwhile is that it is so easy to jump in and out of the game. You play few moves while waiting in line, then put it in your pocket. Play for half an hour while watching TV. Your player gets into impossible situation, just put the game away and resume later with fresh ideas. The game is so deep you can get a feeling of living a parallel life. You pause your life to play game, then you pause game to continue your life. Can be a surreal experience. It is so much more complex and satisfying than your average mobile game.

The complete vehicle customization possibilities were what drew me to it, but it's incredibly full of great stuff over-all.

I've also found the developers very friendly and welcoming to new contributors.