Abstract: The subject technology receives an online request from a first player to enter a game via a network. The subject technology determines a set of interoperable skill metrics of the first player, each interoperable skill metric corresponding to a different skill metric. The subject technology selects a particular interoperable metric from the set of interoperable skill metrics based on an analysis of prior game data of the game and an indication of a predictive performance of each interoperable skill metric. The subject technology performs a skill-based matchmaking process to match the first player to at least a second player based at least in part on the selected particular interoperable metric. The subject technology initiates an instance of the game for the first player and the second player.