Representing Sweden, Justteri is active in the Age of Empires II scene. The match count for Justteri in Age of Empires II stands at 1347. Justteri is most active in the ranked random map team ladder.

When selecting a civilization, Justteri goes with Magyars about 37.2% of the time. The civilization Franks gives Justteri their highest win rate at 61.3% (31 matches). Justteri performs best on the map African Clearing, with a 51.2% win rate over 41 matches.

In the flank position, Justteri has a 49.6% win rate across 369 games. Justteri plays at a 1057 rating in RM Team. Justteri wins 48.2% of the time in RM Team after 1094 matches.