The last few days I've just done some gameplay balancing and general polishing of the game. The game starts going really fast at about level 100, it's hard to keep up with. I've changed the music to a different royalty free song by Kevin MacLeod, Pamgaea, www.incompetech.com . I've added an options screen where you can turn on or off the sound and music, this saves to a local file. It's a separate file than the game save file. Here's a progress video:
I've also update the WIP html5 demo, you can play it here: