As a player from France, Sej participates in Age of Empires II. Sej has participated in 928 matches across different game modes. Sej picks Chinese more than any other civilization—22.4% of the time.

Sej has a 56.8% win rate with Chinese over 206 matches. Sej wins 52.3% of their matches on Arabia (453 played). In 94 games as pocket, Sej has won 54.3% of the time.

With a rating of 1126 in RM 1v1, Sej has established their level. Sej wins 49.9% of the time in RM Team after 363 matches.