A method and a system are disclosed. The method that is executed by a game service platform server managing a plurality of games for searching game challenge opponents includes: receiving a game challenge opponent request, on the game service platform server, generated according to a motion of a first terminal from the first terminal; receiving a position of the first terminal and a distance from the first terminal; searching for a second terminal based on the position and the distance; and setting the searched second terminal to be a game challenge opponent candidate and providing user information for the searched second terminal to the first terminal, wherein the game service platform server executes a game service platform managing the plurality of games and provides the game challenge opponent candidate request through the game service platform.