I can probably claim to be the inventor of 64 and 32 byte competitions back in my demoscene days.
I was organizer of a small demo party called 0a000h. 4k intro competitions were quite common, 256 bytes happened sometimes, I think we were the first to go even lower. We had some impressive results especially in the 64b.
We also did fast-size-coding competitions. We showed a simple effect and then asked people to come up with the smallest way to replicate that within a couple of hours.
I was organizer of a small demo party called 0a000h. 4k intro competitions were quite common, 256 bytes happened sometimes, I think we were the first to go even lower. We had some impressive results especially in the 64b.
We also did fast-size-coding competitions. We showed a simple effect and then asked people to come up with the smallest way to replicate that within a couple of hours.
Results are all linked on the webpage: https://www.0a000h.de/
Most of them should run in dosbox, unfortunately some make problems.