Good basic principle, but the created needs to figure out whether this is truly an idle game, in which case upgrades to the diggers are essential, or not, in which case the layers to treasure needs to be diminished significantly. There is potential here, but choice of an idle game or an active game needs to be made.
This game is almost great. The gameplay is good, atmosphere is wonderful, and the idea behind the upgrades to the sub is a nice improvement over the original. BUT, there is no build up to the upgrades, enemies, and helpers. Each level seems to be its own creation instead of building on the previous one. I was disappointed that you could only cut the mines on one level, only use the rope on two (the second time being the best level of the game), and only once using the bombs. If this game build up each level, using more and more of the upgrades to create harder and harder challenges, then this game could be just fantastic. As it is, I see it as a wasted opportunity, although it was still fun nonetheless.
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