The video you see below is a recreation of Skyrim's CGI trailer only set in GTA 5. It was created using various mods for the PC version of Rockstar's hit.

Skyrim meets GTA V | ROCKSTAR Editor Watch on YouTube

According to Adam Pinkman, speaking with Polygon, the dragon in the video is CGI, but the rest was created in-game using the Chaos Mod and the Rockstar Editor.

Pinkman said he created the trailer to give people a better idea of the mod he's working on.

Don't worry: Pinkman said he plans to add the FUS RO DAH shout to the mod. So you will be able to scream like a true Nord in the middle of Los Santos.

For reference, the Skyrim video is below. He did a damn good job.

Skyrim Live Action Trailer Watch on YouTube