The gameplay itself was based on the earlier Little Fighter 2[1] game, which shares many of the same features.

The game was produced by Marti Wong (involved in all the Little Fighter games) and Oscar Chu, a Chinese MMO developer.

The version allows to replay the entire Story of the Little Fighters in English.

Little Fighter Online (also known as LFO) was launched and developed by U1 Game and played on several servers.

The game started operation on 22 October 2004 and closed on 27 January 2016.