The lovestruck techie used a level-editing programme called Lunar Magic to create the unique proposal – before getting down on one knee to proffer a real-life ring.
The man's girlfriend of five years was completely unaware of his intentions when he suggested she play a little Mario on their old Super Nintendo console last week.
He secretly recorded her delighted reaction in a video posted on YouTube.
"On October 15th 2009, it was our 5 year anniversary so I decided to propose," he wrote in a blurb accompanying the video.
"She may not look too surprised in the video but you should have seen her afterwards, she couldn't sit still.
"And no it wasn't staged, but I did sit her down told her to play some Super Mario World, but she totally didn't know she was being recorded."
The man, who lives in New York but did not identify himself in the clip, is not the first romantic geek to propose through a
video game.
Last year, a software programmer and blogger from New Jersey
reprogrammed his girlfriend's copy of the puzzle game Bejeweled so that the screen went clear and a ring a dropped down when she reached a certain score.
And a Google employee proposed to his girlfriend over the eye-level mapping service Street View by holding up a sign reading "Proposal 2.1: Marry me Leslie! " when the camera car passed his office.
Geek proposes to girlfriend inside Super Mario World level - Telegraph
Man proposes to girlfriend inside Super Mario World level
It made me smile
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