going backwards and crashing the game isnt a mistake... its just like real life, i dont know about anyone else but if i throw a paper airplane backwards in real life, my house blows up.
The game isnt difficult on the harder settings... until the surviviors go crazy and riot... it's the end of the world, sorry there is no cavier and baked alaska.
 "Flight"){kind=icon}
 "Rebuild"){kind=icon}