As a player from Netherlands, Japper participates in Age of Empires II. To date, Japper has played 73 matches in Age of Empires II. Among all available civilizations, Japper picks Saracens most frequently at 57.5%.

Japper's best win rate is 57.1% with Saracens in 42 matches. Japper has the highest win rate in the flank position: 66.7% over 15 games. The RM Team rating for Japper is 1040.

Over 32 RM Team games, Japper has won 65.6% of the time.