Red Dead Redemption 2 mod ports entire GTA San Andreas map to Arthur Morgan's world

A modder named MrVicho13 has built something that shouldn't quite work: the entire map of Grand Theft Auto's San Andreas, transplanted into Red Dead Redemption 2 and made rideable on horseback. The proof-of-concept exists in a 14-minute video uploaded years ago, but it's circulating again now, and for good reason—it's a small window into what's possible when someone decides the boundaries between Rockstar Games' own worlds don't have to mean much.

The mod, created through RedM (a community framework for modding Red Dead 2), lets Arthur Morgan explore the iconic locations of San Andreas: Los Santos, Grove Street, San Fierro, Las Venturas, Mount Chiliad. It's rough. The textures are basic. There are no NPCs wandering the streets, no traffic moving through the intersections. Collision detection is minimal. But the bones are there, and the scale of the work is evident in what's been accomplished—an entire state's worth of geography, ported from one engine to another and made functional enough to ride through.

MrVicho13 was explicit about the project's status in the video description: this is a proof-of-concept, unstable, and not being released to the public. The modder noted it's a direct port of their San Andreas map from 2022, carrying all the rough edges from that earlier version. There's also a separate GTA V port of San Andreas that's still in development, a different project entirely. The creator asked people not to request downloads—the work simply isn't finished, and it's not meant to be shared.

What makes the mod interesting now isn't novelty; it's what it reveals about Red Dead 2's technical foundation. The game's weather system, often overlooked in normal play, becomes visible here on a low-poly landscape. Rain, fog, and atmospheric effects render with clarity against the simplified geometry. There's a trade-off—some areas look oddly reflective, almost plastic—but the demonstration is genuine. You can see how much work Rockstar put into environmental systems that usually play against detailed, hand-crafted terrain.

The mod resurfaced when X user Synth Potato shared it, and the response was immediate. Players recognized something they didn't know they wanted: Arthur Morgan on Grove Street, the San Andreas skyline behind him. The comments captured the appeal—the reversal of what modders usually do, the collision of two worlds that feel like they should stay separate. One commenter noted the absurdity of it: "Modders really said what's a genre boundary."

But there's a shadow over projects like this now. Rockstar Games recently tightened its modding policies, and the new restrictions are specific: players cannot combine in-game assets from one Rockstar title into another. They also cannot modify official story content. The move is framed as protection of intellectual property, but the community response has been sharp. Players have called it restrictive, worried it will hollow out the modding scene that has kept Red Dead 2 and GTA alive on PC long after release. If these rules hold, the kind of cross-game experimentation MrVicho13 demonstrated may become impossible—not because modders lack the skill, but because doing so would violate the terms they're required to accept. The question now is whether Rockstar's games can sustain their communities under these constraints, or whether the restrictions will simply push modders elsewhere.