My droid phone isn't working correctly at the moment and I'm stuck with this crappy flip phone. How long do new flash deals last anyway? I'll only be working 8 hours.
6, 8, 10, and 12 hours for each game respecitively. You'll most likely miss one deal or two
I'm 98% sure that's just for the initial four. Then there will be a new one every two hours starting with the end of the first 6 hour one, and each new flash sale will last six hours. So there will be four flash sales going on at any given time.
Really, if you go to bed when a flash deal starts and when the community deal has plenty of time left, you should have no problems with going to sleep and not missing anything.