Based in United States, KOSTERK competes in Age of Empires II. KOSTERK's profile shows 1176 completed matches in Age of Empires II. KOSTERK has a clear preference for the ranked random map team ladder.

KOSTERK wins most often with Wu—56.7% in 30 games. On Black Forest, KOSTERK wins 62.2% of the time (209 matches). flank is KOSTERK's strongest position, boasting 53.4% wins across 311 games.

KOSTERK plays at a 1105 rating in RM Team. KOSTERK's RM Team record stands at 49.9% wins over 816 games.