A method for wagering on a skills-based digital gaming competition, the method executing on a computing device including storage storing a peer-wagering module that is external and distinct from at least one game stored on the storage device or another storage device, the method including: receiving potential game and competitor player data; receiving game competition selection information from the player that includes at least one selected game instance and at least one wager amount; receiving game instance match ID data generated by the transactional server, wherein the game instance match ID data includes at least one of: credential data associated with the player, player wager amount or a board, level, or difficulty setting associated with the selected game instance; and transmitting the game instance match ID data and game initiation data to the game, thereby activating the at least one selected game instance on the computing device.