i liked the game, but i can not agree with" zflxdverdammt " that its better then mother load, nothing tops that digging game.
4 stars well crafted decent amount of upgrades and proper progression.
I give you extra kudos for the fact you kept the objective alive through out the whole game, which is to get to china. Most would expect you need to grind a little on the lower floors to get deeper, and aim for objects, but the most effective thing to do is to get as far as you can because the more you progress the more objects are worth.