A list of attribute categories associated with a plurality of graphical assets to construct a simulated element of a graphical simulation is received. An element profile for the simulated element using the list of attribute categories is determined, wherein the element profile comprises an attribute value for each attribute category of the list of attribute categories. A list of graphical assets from the plurality of graphical assets that match the element profile is identified. A set of graphical assets from the identified list of graphical assets to be used to construct the simulated character is selected non-deterministically from the list, and the simulated element is subsequently constructed using the selected set of graphical assets.