This is a little on the linear side, but fun! I like the mining aspect, but wish we could flag areas we know to be open to prevent accidental digs.
I also wish we had a dig or a mining tag on Kongregate, as I love these kinds of games!
I'm not having any lag issues, but the mouse doesn't actually aim. You can select a 45 degree angle to the right or a 45 degree angle to the left, and that's it.
You need a healthy body to keep going, you know.