One thing to know about Oktoberfest beer is that it's always a lager. There are, however, two distinct styles of Oktoberfest beers that are worth knowing about. American Oktoberfest beers tend to be Marzen, an amber-hued and slightly sweeter take on your typical lager. If you actually go to actual Germany, however, you'll find the beer to be paler and closer to what you might think of for a more standard lager - this style is closer to what's known as a Dortmunder.