SD Gundam: Over Galaxian is a semi-3D update of Namco's arcade classic Galaxian , featuring the famous SD Gundam characters. The game plays pretty much the same as the original, though there are some added features such as power-ups. The game includes two different story modes: Gundam Story and G Changer Story , a remixed version of the original Galaxian, and a two-player VS mode.
The gameplay is similar to the original Galaxian, with you controlling the player ship, shooting aliens and trying to reach the top of the screen. You can also collect power-ups such as missiles, which increase your firepower. The game gets progressively harder as you progress through each level, requiring skill and strategy to beat.