As a player from France, Sej participates in Age of Empires II. Sej has participated in 950 matches across different game modes. Sej picks Chinese more than any other civilization—23.3% of the time.

Sej has a 57.1% win rate with Chinese over 219 matches. Sej wins 52.8% of their matches on Arabia (464 played). In 96 games as pocket, Sej has won 53.1% 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 385 matches.