Representing Uruguay, Kosmera is active in the Age of Empires II scene. Kosmera has competed in 17 Age of Empires II matches so far. Kosmera has never played a ranked match in Age of Empires II.

Byzantines is the go-to civilization for Kosmera, making up 29.4% of their picks. With 8 matches as flank, Kosmera holds a 25.0% win rate.