An entry in the Aleste series, the game follows Ellinor Waizen piloting the Galvanic Gunner space fighter craft to face against the invading Moon Child army.

Its gameplay follows the same conventions as earlier Aleste titles, with the player fighting waves of enemies and bosses, while avoiding collision with their projectiles and other obstacles.

GG Aleste was co-designed by graphic designer Hiroki Kodama and programmer Yukinori Taniguchi, with Masamitsu Niitani serving as producer.

[1][2] Its gameplay follows the same conventions as earlier Aleste entries;[2] The player controls the Galvanic Gunner fighter craft through seven increasingly difficult stages over a constantly scrolling background, populated with an assortment of enemy forces and obstacles, and the scenery never stops moving until a boss is reached, which must be fought to progress further.

[6] It was produced by Masamitsu Niitani, with graphic designer Hiroki Kodama and programmer Yukinori "Akaby" Taniguchi being in charge as co-planners.

[7][8] Other staff members also collaborated during development, including supervisor Takayuki "Jemini" Hirono and Kazuyuki Nakashima acting as concept adviser.

[9] Kodama faced difficulties with restrictions of the Game Gear, but the programming support provided by Hirono was enough for him to concentrate on the artwork, while boss designs were outsourced by Nakashima.

[11][12] The game was included as part of the Aleste Collection, which was released in Japan by M2 under their publishing label M2 ShotTriggers for Nintendo Switch and PlayStation 4 on December 24, 2020.

[13] It was also added in a Game Gear Micro variant, bundled as part of a limited edition for the Aleste Collection, featuring all of the same titles as in the main compilation.

[24] Joystick's Olivier Prézeau lauded the game's graphical department for its smooth scrolling, setpieces and animations, as well as the controls and sound, recommending it for shooter fans.

[21] Jeuxvideo.com's Shametblame highlighted its graphical presentation due to the number of sprites on-screen, lack of slowdown, stage variety and large bosses.