Virtual Villagers Tips & Tricks, Walkthroughs, Guides, Hints and HelpLast Day of Work Official Forums: Virtual Families, Virtual Villagers, Fish Tycoon
It appears to be random, and we've never seen it on any of our test devices. We still get a few reports of it happening in people's games, but we're unable to determine a pattern or locate the cause of the bug.
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Barbara Unicorn Last Day of Work