We are currently working on new rules for what content should and shouldn't be allowed on this website, and are looking for feedback! See Esolang:2026 topicality proposal to view and give feedback on the current draft.
UltraLaminar
UltraLaminar is a cellular automaton kind of esolang. I made it and posted it here because I felt it fit in.
Tiles
Walls never change state.
Globbaroons move in their set direction (^, v, <, or >) unless there's a wall there, in which they follow the wall until they can move in their set direction again.
Background tiles are background and change if a globbaroon moves there.
When 2 or 4 globbaroons would move to a tile in the same moment, they all get annihilated.
When 3 would, they combine into one globbaroon moving in a random direction.