Free-to-play sports games specialist SportCaller has expanded its partnership with the Paddy Power Betfair-owned Sportsbet to roll out a series of predictions games for the Australia-facing brand.

Having initially partnered Sportsbet to launch a game centred around the US National Basketball Association (NBA), the supplier was recommissioned to develop titles based on some of Australia's most popular domestic sports.

This will see games based on Australian rules football and rugby league launched on the Sportsbet app. Players have to predict the first try or goalscorers for five featured National Rugby League (NRL) or Australian Football League (AFL) games to win a jackpot of up to AUD$350,000.

The games are designed to boost Sportsbet's customer acquisition efforts and to retain customers. They also help encourage more betting activity as the games are accessed from users' accounts, allowing players to seamlessly bet money on their picks, via a live-odds bet prompt integrated into the game.

"Having pioneered the free-to-play jackpot model with football and racing, it's rewarding to see our games' core values of outstanding gameplay and bet-conversion export so effectively into other sports," SportCaller managing director Cillian Barry said. "Cracking a new continent in partnership with Sportsbet's was a no-brainer, as they have the expertise and ambition to invest and grow market share Down Under.

"SportCaller's patented database schema and integration are flexible enough to easily adapt to the differing data and logic of any sport, maximising the FTP possibilities, no matter what the territory."

Sportsbet head of sports product Ryan O'Callaghan added: "We were pleasantly surprised with the performance and retention rates when we first enlisted SportCaller's free-to-play expertise on the NBA.

"The performance gave us confidence to contract them to create new FTP games for our users across additional sporting codes," O'Callaghan explained. "The chance to back their favourite players to score first for a huge jackpot has been taken up by both casual and regular punters."

The supplier has also launched a range of World Cup predictions games, where players are asked a series of betting-related questions to win prizes, which include bet prompts to convert them into real-money gamblers.