I currently play WFRP 2e with my group, and we've played D&D4e and various variations of FATE (playing a Dresden Files game next), we're each getting a turn to GM something. I've checked with them and despite the fantastical nature of most games, they'd be happy for a change of pace by going historical. The Hellenistic age is ripe for roleplaying adventure, and barely covered by RPGs.
Bookmarks