If the different rule systems allow playing in many different Universes, we are also proposing a closely linked set of playgrounds through the Future Memories Universe. This Universe, with its History and its different Ages, allows playing Heroic Fantasy, Post-Apocalyptics or SF Scenarios (more, …). We followed the same spirit when choosing the other rule systems because they are opening the players and game masters to rich opportunities for scenario writing, players experience and so on and so forth.
This state of mind will guide the authors when choosing to enrich the rule systems supported.