SpaceDefenseGuardHeroes offers players control over various alien enemies with their unique abilities that they must use wisely against the enemy forces advanced technology to protect Earth from destruction. The gameplay revolves around building an impressive defensive structure and using powerful heroes like Captain Zephyr or Commander Xylophorus. The game features a variety of levels, each one progressively harder as players progress through it; this adds excitement for new challenges while maintaining difficulty level consistency throughout the series.
Players can choose from different types of aliens with unique abilities that they must use to defeat their enemies and protect Earths home world. The story follows an alien invasion on our planet.