SD Gundam World - Gachapon Senshi - Scramble Wars - Map Collection (Japan) (Disk Writer) is a unique addition to the SD Gundam series. It seems to be less of a standalone game and more of an expansion pack or supplemental content, likely focusing on providing additional maps and content for the main Scramble Wars game. The "Disk Writer" specification implies that it's distributed on a writable disk, perhaps allowing players to customize or create their own maps.  Bandai is presumed to be the publisher.

SD Gundam World - Gachapon Senshi - Scramble Wars - Map Collection (Japan) (Disk Writer)

SD Gundam Gaiden - Knight Gundam Monogatari (Japan) (Rev 1)