Representing United States, costileoo is active in the Age of Empires II scene. 203 matches of Age of Empires II are on costileoo's record. The majority of costileoo's matches are in the ranked random map team mode.

costileoo shows a preference for Japanese, picking it 22.2% of the time. costileoo wins 50.0% of matches when playing as flank (22 matches). costileoo's highest rating is 1025 in the RM Team ladder.

costileoo's RM Team record stands at 52.9% wins over 68 games.