random memory address access:
probably mentioned this before

old spectrum cover tape game called "A Whole New Ball Game". Basically like Ichi on steam, similar at any rate. Ball in constant motion, and you have collectables that the ball connects to to pick them up. Use limited numbers of reflecting blocks and teleports etc you can place down and rotate to make it collect the points, avoid hazards etc.

Anyway it had a fractal tree generator hidden in it you could access. I liked that.