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Running Pong in 240 browser tabs

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Running Pong in 240 Browser Tabs Finally a use for my unclosed tabs Feb 20, 2025

What do you do with your unclosed browser tabs? I find that they take up a lot of screen space. So this week I figured out how to run pong inside mine.

Loading... putting that space to good use

That’s 240 browser tabs in a tight 8x30 grid. And they’re running pong! The ball and paddles are able to cleanly move between the canvas in the foregrounded window and all of the tabs above.

You can see the (awful) code here. But how does this work?

Inspiration

This project was inspired by my friend Tru, who made a version of Flappy Bird that runs in a favicon 1 (Flappy Favi) last week.

1 A favicon is the little image that a browser shows you in the tab bar when you visit a website.

FlappyFavi is great, but it’s a little hard to see what’s going on because favicons are so small. I figured I could fix that.

Loading... tiny!

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