For the record, you're thinking about the World League of American Football (WLAF), which had two seasons (1991, 1992) in the US and Europe before going on a three-year hiatus and then being reborn as the World League, but with only European teams, most of which didn't survive very long. It was later rebranded NFL Europe, and it continues to the present, with the latest season seeing five teams in Germany and one in Amsterdam. (It is often jokingly called "NFL Deutschland".)
(Incidentally, only 24 days left until the Hall of Fame Game kicks off the preseason! I'd better finish watching the documentaries on my 300-hour TiVo to get ready, since it's hard to watch football while underwater, and a game is far too long to watch in one surface interval.)