In 1984, it was released for the FM-7 and PC-9801 computers as Thunder Force Construction, featuring an add-on that allowed players to create custom areas, like a level editor or game creation system.

Gameplay consists of flying the FIRE LEO over ORN occupied areas while destroying enemy base installations and turrets.

The ORN Empire (antagonists of the game) has built a large asteroid fortress named the Dyradeizer to oppose the Galaxy Federation.

In addition to its high firepower capabilities, Dyradeizer is supported by shield generators hidden in various locations by ORN, which render the fortress invisible.

[1] In 1984, Technosoft released a level editor, or game creation system, entitled Thunder Force Construction, created by Yoshimura for the FM-7 computer.