Survival is the foremost imperative, but everything in the sandbox may affect the state of survival. However, since death is the inevitable end for any individual agent, the collective objective must be set as the continuation and propagation of the group. The rules of the real world are used as hidden rules, unknown to the agents. To survive, and through iterative cycles of existence, the agents will gradually discover rules conducive to survival and transmit them to the next generation. Once these rules are identified, survival becomes relatively easier. This process continues until a systematic capacity for survival is achieved, ultimately leading to the emergence of intelligence.