A one-evening pico-8 toy for #tweettweetjam, in 555 characters of source code.

  • Use the arrow keys to move an attractor.
  • 🅾️ (Z on most keyboards) to select a different attractor.
  • ❎ (X on most keyboards) to adjust size.

(source code link to be added)

Rated 5.0 out of 5 stars
(1 total ratings)
Made withPICO-8
TagsGravity, PICO-8, toy, tweetjam, tweettweetjam
Average sessionA few minutes


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This is so neat, I love the neon particle trail effect. Can make some cool looking patterns.

Once of my attractors got stuck at maximum repulsion, just vibrates when I press the button.

(1 edit)

Thanks! Ah, and now I see a bug in the attractor resizing-- I'll have to figure out if I can fix it within the 5 characters I have left...

Basically, when the attractor is at max size it changes the direction of what the resize button does-- but if you happen to stop resizing exactly at max size, it sits there changing direction back and forth 60 times a second, so you only have a 50/50 chance of hitting the resize button on the right frame to break out of that loop vs. further growing it.

Update: I think this is fixed now. 560/560 characters used.

Nice fix!