Sid Shuman of PlayStation blog:
"For Gameplay Programmer Mike McManus, the secret to co-op success is CAKE. “It took a long, painful prototyping process to find things that worked, so we came up with a catchy acronym: CAKE.”
Active for all players
Easy to understand
“We found that if we can design something that satisfies CAKE, it has a really good chance of being fun before we put any work into it,” McManus told us in a recent demonstration of Ratchet & Clank: All 4 One."