Gradius Galaxies is a shmup game for the Game Boy Advance in 2001. It is the first game in the Gradius series to be developed by anyone outside of Konami's team. In Europe, it was known as Gradius Advance, and Gradius Generation in Japan. The Japanese version, being the last to be released, had a few exclusive Challenge Modes added, and had additional an additional invisible 5000 point bonus in one of the levels.
You control a spaceship with which you use to fly through space and several different types of terrain, blasting at spaceships, aliens, organisms, and armaments. You collect power-up pods that you can use to activate power-ups such as speed, bombs, double-shots, lasers, options, and shields. At the end of the level there is a boss creature that you must defeat to continue on to the next level.