Someone is playing Super Mario Bros. on the side of an SF building

San Franciscans passing through the Lower Haight Sunday night may have noticed something out of the ordinary: a giant video game being projected onto the side of a building.

Dan Jackson, a Lower Haight resident, was walking down Haight Street near Fillmore Street around 5:45pm when he noticed it. It appears someone was playing Super Mario Bros., projected onto the wall above Love Haight Computers, next to a CVS pharmacy.

Super Mario Bros is a video game that was extremely popular in the 1980s.

Click through this slideshow to find the most popular video game the year you were born. Super Mario Bros is a video game that was extremely popular in the 1980s.

Click through this slideshow to find the most popular video game the year you were born. Photo: Nintendo Photo: Nintendo Image 1 of / 54 Caption Close Someone is playing Super Mario Bros. on the side of an SF building 1 / 54 Back to Gallery

It's not clear yet who is behind the video game fun. We contacted Love Haight Computers and they couldn't confirm the source of the projection.

Check out the video above to see for yourself. And keep your eyes peeled tonight to see if the mystery video gamer is at it again!