Game freeze on OSX

I was winning, cough, cough, Tunnel Escape on Play+ and was selecting frenzy or pushback when the game completely froze. Animation was frozen and I could not select any game buttons on the game screen or any of the menu choices on the game window. Had to force quit. Sadly Slak did not appear and eat my snacks. Screen shot and file attached.

Running a Mac Mini (2.4 GHz Intel Core i5 w/ 16 GB 1333 MHz DDR3) with OSX 10.8.5. Had Chrome, Paprika, Steam, and Evernote running in background. Defender’s Quest Steam v1.1.33. No other applications appear to be affected. Will be rebooting the computer to alleviate any memory issues. First time this has happened.

Looking forward to DQII.