Here's a couple of tweetcarts I've made. Nothing too crazy (compared to the other insane tweetcarts I've seen here).

I was messing around with spirals and found some interesting patterns. Every once in a while, the arms of the spiral align and they even count down (6 arms, then 5 arms, then 4...). If you enable line mode, it creates shapes with the corresponding amount of sides (hexagon, pentagon...)

X to toggle line mode
C to stop spinning
Up/Down to speed up and slow down
Right/Left to step forward or back (most useful when it's fully stopped)

This second one is just a flappy bird clone. C to jump. You also play as your score apparently.

tweetcart tweet thread