Representing Türkiye, Kostok is active in the Age of Empires II scene. Kostok has competed in 1382 Age of Empires II matches so far. Kostok dedicates most of their playtime to ranked random map team.

Kostok favors Turks over other civilizations, selecting it in 12.3% of matches. Kostok performs best with Burgundians, holding a 56.2% win rate across 48 matches. Kostok is at their best on Nomad, winning 51.1% of 141 matches.

A 50.8% win rate in the flank role over 594 games is Kostok's best. The RM Team rating for Kostok is 869. Across 983 RM Team games, Kostok holds a 50.7% win rate.