The game itself is good, it has few challenges but some are a little uninteresting due to the time it takes to achieve the objective - it needs more challenges to make it more attractive and challenging and because it's not multiplayer, this way each player could build their base and defend not only from intruders but also from others who are on the same network (LAN and internet for example).
The commands are responsive and fast, highlighting that each Planet depends on the user's full attention as it costs nothing for a disaster to happen.
However, there have been some saving bugs and using a notepad it is possible to examine and correct the errors (a basic knowledge of logic is necessary, understanding the lines makes it comfortable to rewrite or edit each iteration).
The version I was referring to is 1.3.7 and now that a new version is out I will purchase it and who knows, maybe the feedback will improve.