I spend good part of my day, managing the vault, but sometimes, If i don't open the game lets suppose...1 hour, when I come back to the game, many dwellers are dead, my resources drop from full to zero, the surviving dwellers are radio contaminated, dying easily for new infestations, and its hard to heal them because the radio...Whats happening? I think it's a bug...Why everything falls apart so easily????

Did you exit the game or just leave it running?

Dwellers get radiation poisoning if water production drops into the red.

Dwellers get health wasting away if food production drops into the red.

Dwellers can't produce food or water if the rooms go dark because power production dropped into the red.

Make sure you have a good reserve of water, food, and power before you exit a vault.

Resources will CONTINUE to be used for a short while after you exit the vault.

If you don't fully exit the game, it could keep running, consuming all of your resources. I just recovered from a similar incident.

Whoa, yeah without Mr. Handy's helping you collect all that, your resources will dwindle if you don't check on it every five minutes or so

Now I'm paying more attention, I leave to main menu, everytime! Thx guys!

Yeah that's my biggest issue when I use Bluestacks and play on my work laptop... I keep forgetting to exit out properly and goin gback to see my resources all gone... again.. sigh