Why not? We could even think of both as collections of 3d structures showing all valid structures possible for a board of size n by n. There are some differen

Why not? We could even think of both as collections of 3d structures showing all valid structures possible for a board of size n by n. There are some differences, every single 3d Conway structure has a unique top layer, while Go does not. But that seems like an overall minor difference. There are many more Go shapes than Conway shapes given the same N, but both are already so numerous that I'm not sure that is a difference worth stopping the comparison.