Exploring alternatives to LCDM through simulations

While the LCDM cosmological model has proven remarkably successful, the two principle components, dark energy and dark matter, remain mysterious. There may also be indications of some tensions between this model and observations. Therefore it is worthwhile exploring alternative ideas. In this talk I will discuss the use of simulations to explore such alternatives, giving examples of numerical experiments that may allow us to test the predominant LCDM paradigm.