GTA modder brings Liberty City, Vice City, and San Andreas together at last - with portals

Modder Dryxio built an experiment that runs GTA 3, Vice City, and San Andreas simultaneously in one process.

Live portal windows let players shoot through the worlds or step inside them to switch worlds and characters instantly.

The portals connect Liberty City, Vice City, and San Andreas in real time, with interaction, movement, and combat carrying across maps.

The project highlights an advanced modding feat that merges separate open-world games with real-time physics and AI.