The Portal Radio Loop 10 Hours meme stems from the hidden radios found throughout the Aperture Science Enrichment Center in Valve's 'Portal.' These radios play an upbeat, instrumental version of the game's credits song, 'Still Alive.' While originally a small easter egg, the track became an internet phenomenon when extended 10-hour versions were uploaded to YouTube. The meme typically centers on the infectious nature of the song and the ironic psychological toll of listening to the loop for extended periods. It is widely used to represent intense focus, procrastination, or the slow loss of sanity in a humorous, gaming-centric context.