Attendees at last year’s SXSW were no doubt down for just about anything. Chances are, though, they never expected to find themselves in Sweetwater, the Wild West theme park featured in HBO’s smash hit “Westworld.”

Yet there it was, an immersive marvel that allowed visitors to stroll across more than 90,000 square feet of space, interact with 66 actors, and lose themselves in 444 pages of immersive theater.

In all, this alt-Westworld drew over 4,000 visitors, generated 1.9 billion social impressions and nearly 500 press stories from around the world. #SXSWestworld was hailed in one of those articles as “one of the best publicity stunts of the 21st Century.” Some diehards even got married in faux Sweetwater.

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