7th Sea CCG@ (7) 
This role playing game is set in an alternate European history in the mid-1600s. Players play swashbuckers and adventurers from popular fiction.

Alternate History (4) 
Travel back in time to the arcane inventions of any renaissance period, the swashbuckling adventures of coastal pirates or even struggle for survival as a caveman. Or take an eral and change history - Marie Antoinette lives, Hitler becomes a famous artist or the Native Americans defeat the colonists.

Continuum@ (3) 
The Continuum RPG (and its sister game, Narcissist) is a time travel rpg somewhat rigourous in its science and in its believability. It requires a bit of math and bookkeeping, but is the most realistic time travel rpg.

Twilight 2000@ (5) 
Near-future game; portrays the adventures of American soldiers stranded in Europe after World War III.