This new Super Mario program will have you living out your ’80s and ’90s video game nostalgia in a simple screenshot.

Thanks to some clever programming by Aaron Randall, you can download a program and make those old video games come to life on the internet.

Interested? Download the source code from GitHub and then launch it through Xcode to turn whatever screen or window you’re looking at into a playable level of Super Mario.

Now, go forth and geek out.