The opening parts of the video show him loading the game onto the Switch using a configuration menu. In a video uploaded to YouTube recently, user grabman shows footage of themselves actually playing Grand Theft Auto: Vice City on the Nintendo hand-held console. Even if that doesn't turn out to be true, it's still an extremely popular installment to the series, so much so that one user has managed to get the game running on a modded version of a Nintendo Switch.
In fact, it's so fondly remembered, that rumors from an industry insider say GTA 6 may be set in a modern day version of the city.
Grand Theft Auto: Vice City is arguably one of the most beloved games in the whole franchise.