Construction and management simulation (CMS) is a type of simulation game in which players build, expand or manage fictional communities or projects with limited resources. Strategy games sometimes incorporate CMS aspects into their game economy, as players must manage resources while expanding their project. But pure CMS games differ from strategy games in that "the player's goal is not to defeat an enemy, but to build something within the context of an ongoing process." Games in this category are sometimes also called "management games".