Both games were originally released on the Nintendo 64 console, and remain two of the best-loved video games ever made.
“Modding” is when a game’s code is altered, usually on PC, by users, allowing them to add unofficial content to existing releases.
A modder who goes by StupidMarioBros1Fan created the mod, which turns Mario 64’s famous Peach’s Castle setting into a GoldenEye map.
Footage of people playing the mashup, entitled GoldenEye with Mario characters, can be seen on YouTube.
However, players need to use an emulator a programme which allows gamers to run console game on their PC to play the game.
GoldenEye, first released in 1997, is frequently listed among the best first-person shooters of all time, with particular praise being lavished on its multiplayer mode.
Super Mario 64 originally hit shelves in 1996, and sees players control Mario as he traverses a number of different environments, collecting stars.
The game was re-released on the Nintendo DS in 2004 (as Super Mario 64 DS), and was included in last year’s three-part re-release Super Mario 3D All Stars for the Nintendo Switch, alongside Super Mario Sunshine and Super Mario Galaxy.