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Twenty One

Twenty One

Sporty Studios
4.4 ★★★★★★★★★★ 632K reviews • 1M+ Downloads • 18+ Rated for 18+
Contains ads In-app purchases
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About this app

What is Twenty One?

The Detroit Free Press reported on Wednesday (Sept. 16) that a water tower located northeast of the downtown city was recently painted and branded with Polymarket’s likeness. The water tower is located just off Interstate 94 at Mount Elliott Street, Exit 217.

The water tower is specifically located at the business of Mount Elliott Crushing, a recycler of concrete products. While the water tower is on private land, the City of Detroit requires that permits be secured for advertisements on such structures.

A city spokesperson told the Detroit Free Press that no such permit has been granted for the Mount Elliott Crushing water tower. The city spokesperson said someone from the Buildings, Safety, Engineering, and Environmental Department would be sent to the property for an inspection and “possible correction order.”

What is Twenty One?

According to a Polymarket news release, the new initiative will give users a dedicated place to talk markets, share their picks and trade together directly on Polymarket.

“People are constantly debating what’s going to happen next with their friends and sharing predictions in group chats,” said Travis VanderZanden, who serves as chief growth officer at Polymarket. “With Squads, we’re bringing the conversation and trading together so friends can follow the events they care about and make their predictions in one place.”

Taking a page from a number of humourous Nike commercials during the 1990s, along with a farcical spot aired by the NFL during Super Bowl LIII, Berg injected slapstick comedy into the ad in an apparent attempt to cater to sports fans.

How to play Twenty One

That widening breadth is vital for the industry at a time when some analysts estimate volume could jump to $10 trillion by 2035 – a projection that is largely rooted in other categories surpassing sports for the top spot.  

Nearly a third of respondents told Fullstory that increased event contract breadth could compel them to consistently choose a prediction market over a sportsbook.

Sportsbook operators have an inherent advantage over prediction markets in that the former can offer significantly larger sign-up and retention bonuses and gaming companies are leaning into those expenditures this football season.

App info

Updated onAug 23, 2026
Size74 MB
Installs1M++
Current Version2.6.9
Requires Android5.0 and up
Content RatingRated for 18+
Interactive ElementsUsers Interact
Released onApr 01, 2022
Offered bySporty Studios
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