For a GM the biggest concept will be the idea of overlays. An overlay is like cosmetics, taking what exists and making it look more like you want it to. ORPS core rules for instance don't include 'magic spells' and the entire system is built around a point buy system, however a GM who desires to build something more in line with Pathfinder or D20 can do so, by creating an overlay which packages traits into 'magic spells' with custom names and building classes and levels from the core stats, skills, and traits. An Example campaign is being created to show what an overlay may look like here: Secret Wars.
page revision: 1, last edited: 15 May 2012 10:48