Unfortunately, some of them would cause far more death and destruction with their powers than would have happened had they not used them.
What if games were properly bug tested and debugged, so you don't get bugs like the flying ships in Assassin's Creed?
We won't be able to find a way to get unlimited coins and we also won't be able to find a way to be OP.
What if animals have a brain that can think like a human?
(Congrats greymatter! you made post number #100 :P)
"Planet of the apes" would happen irl.
What if the Triple Alliance and the Entante alliances were never signed?
Everything would be grey and gritty and hard-boiled.
Except for indie games.
What if the USSR attacked Nazi Germany first?
Matrix irl.
What if nobody would fear mortality?
You'll probably jut sit in bed all day eating chips and doing nothing while your replica did eveything.
What if Nazi Germany devloped the nuke first?