So many ways to start up and play this game. It is all based on what you like. Take it fast by drilling straight to the core, or take it slow and enjoy the scenery on the surface. Get to space and visit other planets to get the resources to advance your base.
The only complaint I have is the space travel. You have to click to go to space, click to pick a planet. No flying around exploring at will.
All in all it's pretty fun but replay ability is somewhat limited.