Sports prediction contest operator WinView Games is launching paid-entry versions of its contests across most of the United States.

Last May, WinView Inc. raised $12m in financing to fund the next generation of its free-to-play prediction service. WinView customers form pools in which they compete against each other to see who can more accurately predict a selection of in-play-style prop wagers on NFL, NBA and MLB games, as well as MMA bouts and other sports.

Winners of WinView contests were paid in virtual WinCoins, but these could be redeemed for real cash. WinView’s model was deemed legal because players didn’t pay a fee to enter contests.

At the time of that fundraising round, WinView confirmed it was developing a pay-to-play option. On January 4, WinView launched its first Paid Contests in five US states. Three days later, 31 more states were added to the mix, and the company says it will eventually be available in 41 states.