This game is really fun! You build cool digging machines and make lots of money. A few notes: 1. At a certain point, you just leave the game on because it takes so long. Some kind of option to make time faster(An upgrade, perhaps?), and at a certain point, you really only need to use the big drills. Some way to use the little ones would be cool(Maybe making smaller bots to send down tunnels for extra resources), all in all, good needs some work, but that's why it's in active development and not the final version!