Fly
A flight through a fractal, in characters. Ray-marched on the graphics card and redrawn in Unscii characters every frame. You slow down as a surface gets close, so there is always more detail to fly into.
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Pause turns the view into its characters, as text you can select and copy. Drag to look around. W, A, S and D or the arrow keys fly, R and F go up and down, and Shift is faster. On a phone, hold Forward, or put a second finger on the picture.