Earthion takes you to a dystopian future where Earth's resources have been depleted and the environment has been destroyed, forcing most of humanity to settle on Mars. However, when hostile invaders launch an attack on Earth, humanity has no choice but to fight back. You assume the role of environmental researcher Azusa Takanashi, piloting the state-of-the-art spaceship YK-IIA, undertaking the most critical counterattack in human history. Failure is not an option.

This game is a brand new, authentic retro 2D shooter experience, designed with the feel of real 16-bit hardware. As you traverse eight action-packed levels, you'll need to destroy enemy ships and collect their resources to upgrade your ship's capabilities. Strategy is key, as you can use various secondary weapons to develop a wide range of tactics. Beyond the main story, there is also Challenge Mode for those who want to test their combat skills.

The game was developed by Ancient, a studio known for its work on beloved 16-bit franchises such as Streets of Rage, Beyond Oasis, and Actraiser. The soundtrack is composed by legendary Yuzo Koshiro, who has created a soundtrack that will captivate you. You can even enjoy the melodies through the game's built-in Music Player. Earthion promises an intense and nostalgic experience for fans of classic shoot 'em ups.