Modder made actual portals between GTA 1, 2, and 3 — the other game is running behind it, not a video

Modding wizard creates Grand Theft Auto multiverse that lets players travel instantly between Rockstar's first three games: 'We got inter-GTA portals before GTA 6'

Stumbled on this PC Gamer piece about a mod that connects the first three GTA games with working portals. You walk through a door in GTA 3 and pop out in GTA 1's Liberty City, or vice versa. The mod creator said the other game is actually running behind it, it's not a video or a captured window. So both games are live at the same time, which is kind of insane for a mod.

I remember people joking about inter-GTA portals before GTA 6, and now someone actually built them. The mod swaps between the top-down classics and the 3D era seamlessly. I can't imagine the technical headache of keeping two game instances synced like that, especially with how different the engines are.

It's not a GTA 6 thing obviously, but it got me thinking about how Rockstar could play with their own history. We've got Leonida coming, but what if there's a mission that briefly drops you into a retro Vice City map? Not a full remaster, just a small section that loads in the background like this mod does. Probably won't happen, but a guy can dream.

Would you want Rockstar to ever do something like this officially, or is it better left to the modding wizards?

Source: PC Gamer · Curated content.