Falling Rock Tap House in LoDo on Tuesday, September 15, 2009. (Cyrus McCrimmon, The Denver Post)

Collaboration Fest began three years ago as a modest craft beer love fest. Now, the Denver-based event is emerging as a landmark on the national beer map.

The 2016 event on Saturday at Sports Authority Field will feature some of the biggest names and innovative brews in the craft beer world, showcasing collaborations among Colorado breweries and the likes of Evil Twin, Goose Island, Wicked Weed and Prairie Artisan Ales.

The numbers showcase what makes this year more impressive than ever: 152 breweries from 21 states and five countries offering 89 different collaborations.

What makes the festival special is the one-time nature of the beer: Most of the beers are smaller batches made for just this event.

“Each Collaboration beer is created as a fusion of two or more brewery personalities,” said PJ Hoberman, an organizer.

The tickets for the festival are sold out — but most of the Colorado breweries participating will offer the beer at their locations.

In Denver, Falling Rock Tap House is offering an early preview of the collaboration beers at 5:30 p.m. Friday.

John Frank: 303-954-2409, or @ByJohnFrank