Don't know if anyone has heard of it yet, but there is a game right now in Alpha testing phase called BEAMNG - DRIVE. It is a car driving game with no apparanent objectives other than sandbox exploration and finding out how many different ways you can crash the cars. This is the most realistic crashing game i have ever played. The deformation and damage puts GTA and pretty much everything else to Shame:
https://www.youtube.com/watch?v=6QjPKhX9bOI
I've literally been playing this game all weekend practically.... There is a free demo out there, but for 20 bucks you get the "full game", which the permanent version will soon be released through Steam...