My interest lies in exploring computer simulations as extremely potent tools that share some similarities with experiments, theory and models, but are an independent epistemic tool. In fact, cosmological N-body simulations have played a very significant role in the establishment and acceptance of the current paradigm that best describes the growth and evolution of structure formation in the Universe: the LCDM (Lambda Cold Dark Matter) concordance model. By enabling detailed comparisons of theoretical model predictions with observations, simulations have not only refined and developed pre-existing theoretical models but have in fact engendered a new way to create and represent models. What is salient about this novel way to create viable models is that the validation and verification of a given model is clearly articulated, enabling clear discrimination between competing theories. I plan to study in detail the evolution of simulations and the transformations that it produced in tandem with growing observational data on the nature of cosmological theories.