Thunder Force III
Thunder Force III is a scrolling shooter game developed by Technosoft. It is the third part of the Thunder Force series. It was released in 1990 in Japan, Europe and the United States for the Sega Genesis. In the same year it was remade into an arcade game called Thunder Force AC. In 1991 Thunder Force AC was ported to the Super Nintendo Entertainment System under the title Thunder Spirits.
Story
Thunder Force III takes place about 100 years after Thunder Force and right after Thunder Force II. Despite their successes, the Galaxy Federation is not very successful in their fight against the ORN Empire. ORN has installed cloaking devices on five major planets in their space territory, concealing their main base and making it difficult for the Galaxy Federation to find and attack their headquarters. In addition, to protect itself, ORN has built a long-range defense system called Cerberus, which is particularly effective at neutralizing large ships and fleets. For this reason, the Galaxy Federation is developing the FIRE LEO-03 Styx, a starship small enough to avoid detection by Cerberus but with the firepower of a large starfighter. The Galaxy Federation deploys the Styx (which is controlled by the player) on a mission to destroy the five cloaking devices, infiltrate the Empire's headquarters, and destroy the ORN Emperor, the bio-computer "Cha Os".