There are roughtly thirty breweries in the city of Denver alone and nearly that many in Boulder. There are dozens more in the surrounding towns and suburbs, and that doesn't even include Fort Collins, Colorado Springs, Durango and the mountains. I've been to a lot of them, but I've missed a lot more. Still, I tried at least 500 different Colorado beers in 2013 -- from longtime standards to draft-only one-offs -- at as many breweries, beer bars, restaurants, bottle shares and festivals as I possibly could.
Here are twenty (this list focuses on draft-only or very limited release beers since I am also working on a list of the best new packaged beers of 2013) that made me happy, either because the brewers made something perfect or because they went out on a limb, because they tried something different or did because they were just having fun. They are listed in no particular order. Many all still available. Cheers.
See also: 20 breweries that plan to open in Denver in 2014