Magna Regula approach is to cover as many Role Playing Game rule systems as possible. Currently it includes the following rule systems:
- SagaS, a basic RPG distributed under Open Game License (OGL). More information is available on a specific website presenting SagaS rules. The first usage of these rules is the Future Memories Universe;
- PathFinder SRD distributed under OGL: this basic RPG is also applicable to many different Universes as presented in legacy Pathfinder Reference ;
Magna-Regula authors also allowed a No Rules capability allowing Player Character and scenarios to be described only with texts, without any Characteristics or Skills.
Magna Regula plans to develop next, Openquest. These rules are associated with one of the richest Universe developed during many years by Steve Perrin et the late Greg Stafford.