World History Roleplaying Game

[Angel Tarragon]

GURPS Time Travel will be an invaluable tool for you, even though you won't be running GURPS.

 

[Conaill]

If you're a history teacher, and looking at switching between different historical settings GURPS is definitely the way to go! GURPS source books are universally acclaimed for being very well researched an chock-full of interesting historical or mythical goodies. Plus GURPS was designed to be "universal" and be able to freely adapt to a variety of different settings and technology levels. Not to mention the fact that the basic rules are very compact, easy to learn, and freely downloadable: GURPS Lite