Mega Man Battle Network 5 (ロックマンエグゼ5, Rockman EXE 5?) is a Japanese-developed role-playing video game. Developed by Capcom Production Studio 2 (developers of the Mega Man Legends series) and published by Capcom, it is the fifth game in the Mega Man Battle Network series, and the first Mega Man game to be released on the Nintendo DS.

Battle Network 5 comes in three different versions: Mega Man Battle Network 5: Team ProtoMan and Mega Man Battle Network 5: Team Colonel, both for the Game Boy Advance, which have similar gameplay but slightly different supporting characters and stories, and Mega Man Battle Network 5: Double Team DS, which includes the content from both games as well as extra content.

The first version to be published, Rockman EXE 5: Team of Blues, was first published in Japan in December 2004. It was followed by Rockman EXE 5: Team of Colonel, in February 2005. English-language versions of both games were released in North America and Europe in June 2005 as Mega Man Battle Network 5 Team Protoman and Mega Man Battle Network 5 Team Colonel, respectively. The enhanced remake for the Nintendo DS was first released in Japan (July 2005) under the name Rockman EXE 5 DS: Twin Leaders, and later in North America (November 2005) and Europe (April 2006) as Mega Man Battle Network 5 Double Team DS.

Source: Wikipedia