This is an exploration/time management game. It takes time to move your way through the map, which costs air. Run out of air and you die. And it is very slow paced, which I believe is on purpose due to in game purchases. It seems a little simple as there isnt too much to discover in the first couple of hours and if you spend the money you get from what you found improperly, you will not get far.
Its a fair time waster. It is only similar to Minecraft in that you mine for minerals, otherwise it is a dig-till-you-need-air game. Thats about it.
~Anguawolf~ about Mars Miner Universal