Emergent Complexity in Games

https://sites.psu.edu/gamedesignbynickdemarco/2014/02/13/emergent-complexity-in-games/

emergent gameplay complexity economy Scribblenauts Pokemon

Emergent gameplay is the holy grail of game design. Game designers can implement intentional emergence (e.g. Scribblenauts) and unintentional emergence (e.g. Pokemon cloning glitch), which can break your game.