Mercury821 is among the Age of Empires II players representing United States. Mercury821 has 22 Age of Empires II matches on record. Most of Mercury821's games take place on the unranked ladder.

Ranked play is not on Mercury821's agenda—they have never queued for a ranked match. The civilization Celts is the most-played pick for Mercury821, chosen 86.4% of the time. Mercury821 has the highest win rate in the flank position: 33.3% over 9 games.