"Battle Collection" was the first PlayStation Portable game to make use of the system's game sharing function. The Japanese version of the game, simply titled "Namco Museum", was split into two different volumes - the second volume includes three games not found in international releases, these being "Dragon Spirit" and two new "arrangement" games based on "Pac-Man" and "Motos". "Battle Collection" was met with a positive response from critics; reviewers applauded the large library of games, emulation quality and multiplayer features, although would heave criticism towards the Game Sharing option, which many deemed "useless", and for the game requiring a firmware update to boot. In Japan, the game sold 79,572 copies in its first week of release.