Starblade is a video game for the Sega CD platform where players assume the role of a gunner in a GeoSword fightercraft. Gameplay involves combating an enemy armada and journeying to their home base on the planet, Redeye. Players must complete roughly ten missions, while receiving assistance from wingmen, undertaking tasks like destroying enemy battlecruisers and navigating the landscape of Redeye to deploy a payload. Versions for PlayStation and 3DO offer an arcade mode and a refined mode, which features fully textured polygons and fullscreen visuals by eliminating black sidebars.
Sitting in the gunner position of a "GeoSword" fightercraft, you must shoot your way through the enemy armada and bring the fight to their base planet, Redeye. Altogether you'll have around 10 missions to get through before the galaxy is safe and your wingmen will help you along the way. And during those missions, you'll be expected to shoot out the sides of huge enemy battlecruisers, travel inside of enemy carriers and travel through the canyons of Redeye to deliver your payload.
The PlayStation and the 3DO versions offer the choice between an arcade mode and an enhanced mode. In the enhanced modes that flat polygons are remade in fully textured polygons and the black bars on the sides have been removed to turn the image into a fullscreen view.