PC gamers do what Rockstar won’t.
A game like GTA 5 is a literal sandbox- you get this massive, dense, populated world, and the freedom to do almost anything you want, go anywhere you want, any time you want. And the best part is, the things in the world respond to you and your actions. It’s great, and liberating.
There are some boundaries to this freedom, however, and they can often serve as immersion breakers, or a reminder that there are limits to the sandbox. One of these has always been the buildings- indeed, the GTA series has never let players explore all, or even most, of the buildings that dot its urban landscapes. The same was also true of GTA5- but you can trust PC gamers, who are a crafty bunch, to get around that.
Youtuber Newtheft recently posted a video showing off the Open All Interiors mod, which opens up every interior in the game. The remarkable thing is, the buildings seem to be complete, with functioning doors and even people inside, which does make you wonder the reason for them not being accessible to the player in the first place.
The full list of the new locations the mod opens up is:
In addition, it adds elevators to get you into the top floors of the FIB building and markers to help you find all of the explorable interiors. Essentially, if you are planning on exploring the vast world of Los Santos at all, then this mod is indispensable (and a reminder of why the PC version of GTA5 is, indeed, the best one).