Good game, but it really becomes unplayable very quickly. After my third reset, I am sitting at >100q digs/s and the game is running at an average of probably 1 frame every five seconds (even with the reduced UI animations). Gotten to the point that firefox has been telling me to reload the page because it is slowing firefox down. If you find the right way to implement it, I would highly recommend implementing multithreading and offloading the heavy dig processes to worker threads that won't cause the main thread to hang... Though I'm sure there are plenty of optimizations you are also considering :)