Representing United States, Koskinen is active in the Age of Empires II scene. Having completed 12 matches, Koskinen has built up solid experience in Age of Empires II. Koskinen focuses mainly on unranked matches.

Koskinen sticks to unranked or casual play, having never entered ranked. Among all available civilizations, Koskinen picks Japanese most frequently at 50.0%. With 8 matches as pocket, Koskinen holds a 12.5% win rate.