Not recommend. You upgrade everything for the speed and total travel distance, you do not lost distance for some upgrade which is good, but after some time you started to need resources for new things, and most of them need active to start idling. Have some content but 'not finished' everywhere. UI design try to be sci-fi but seems weird in the end, and not unified every tab. I don't like the design of Mars - you must press your mouse here in this small area for like more than 10 minutes to get this automatic or you going to wait this for hours and you can't skip it cause you will need mars' production from now on. I doubt dev put 1 more '0' on that automation upgrade cost. I checked steam page, it seems things have changed, but for 3$ I won't try it out.