This sort of thing is actually pretty common in games; you end up doing some engine customization to fit your needs, and eventually you have to say &quot;We&#x27;ve diverged too far to try and keep following the main updates anymore,&quot; and you stick with a customized version of an old release.<p>Nearly every AAA game is going to fit into that pattern, it&#x27;s just that the 64 bit coordinates overhaul in Star Citizen is probably a larger and lower level architectural change than what most things bother with.