Bill O'Brien is an Age of Empires II player from Germany. Over time, Bill O'Brien has accumulated 24 matches in Age of Empires II. Most of Bill O'Brien's games take place on the unranked ladder.

Bill O'Brien has never played a ranked match in Age of Empires II. Bill O'Brien has a clear affinity for Japanese, choosing it in 16.7% of their games. Playing the pocket role, Bill O'Brien achieves a 100.0% win rate over 1 matches.