Simulation has been used traditionally to solve other areas problems. Real time applications like videogames use typically a continuous simulation scheme. That way of operation has disadvantages that can be avoided using a discrete event simulator as a game kernel. This paper proposes the integration of a discrete event simulator into real time applications to control the applications simulation. The use of a discrete methodology avoids disorderly events execution or the execution of cancelled events. This implies to use events in order to model the system dynamics, the objects interaction and the objects behavior. GDESK is a discrete event simulator prepared to be used as a videogame kernel. Keywords Videogames, simulation, discrete events, kernel