Mobile content distributor Movaya has launched the beta of its TryNBuy game service. The Seattle start-up is marketing TryNBuy as the first off-deck, cross-carrier, try-before-you-buy system for mobile game sales in the US.

The patent-pending licensing system lets you download games over-the-air to a mobile phone and try them out for free before deciding to buy them. Once you purchase a game, it's unlocked for unlimited use. Game publishers can set their own limits of the trial version of their games based on length of play, number of plays or other criteria.

Movaya says it's already signed up more than 30 game publishers for TryNBuy.