Representing Chile, Mattkayser is active in the Age of Empires II scene. Mattkayser has played a total of 49 matches in Age of Empires II. Mattkayser primarily plays on the unranked ladder.

Mattkayser has never played a ranked match in Age of Empires II. Data shows Mattkayser selecting Byzantines as their civilization 67.3% of the time. As flank, Mattkayser has won 50.0% of their 4 matches.