B35/S236
Dean Hickerson and I
have been looking at an interesting Life variant, B35/S236. Unlike
Life, pools of chaos in this rule tend to grow rather than
stabilizing, so in Wolfram's
classification this is class 3. However, it seems to contain
all the ingredients for universality.
Cellular Automata -- D. Eppstein -- UCI Inf. & Comp.
Sci.