With the new update to Box Panic, 200 milliseconds are added to the initial 5 seconds every time a level is completed. This means you can keep going until your fingers give out or you have some sort of mental meltdown. Enjoy!
The issue I had uploading to the site is resolved and was probably due to the fact that I was a moron. You can still download the game from my site but the good ole GameJolt now has the latest version too. Huzzah!