Representing Germany, Grantelbart is active in the Age of Empires II scene. The match count for Grantelbart in Age of Empires II stands at 74. The majority of Grantelbart's matches are in the unranked mode.

Grantelbart has yet to try ranked play in Age of Empires II. Grantelbart performs best in the pocket position, with a 33.3% win rate over 12 matches.