Representing United States, Kowalski is active in the Age of Empires II scene. To date, Kowalski has played 8 matches in Age of Empires II. Kowalski has yet to try ranked play in Age of Empires II.

Data shows Kowalski selecting Mongols as their civilization 62.5% of the time. Kowalski wins 100.0% of matches when playing as flank (2 matches).