The game uses a 2D side-scrolling perspective and lets players choose either Vent or Aile as the main character. Instead of strictly isolated stages, progression happens through connected zones, missions, and warp points. The main mechanic is transforming with Biometals, especially Model ZX, while other forms grant different movement options, elemental powers, or area access. Success depends on reading enemy patterns, learning boss weaknesses, and using dashes, jumps, wall movement, and charged attacks efficiently.

Vent

One of the two selectable protagonists, a courier who becomes involved in the conflict after obtaining Biometal.

Aile

The alternate playable protagonist, sharing the main story with a different character presentation.

Girouette

A Guardian member connected to Biometal Z and a major figure in the story.

Prometheus

A recurring mysterious enemy known for aggressive combat ability.

Pandora

A key antagonist who appears alongside Prometheus and wields unusual powers.

Serpent

One of the central villains, driven by ambition and control over the world's order.

Learn the area numbers and warp routes early to reduce backtracking. In boss fights, focus first on recognizing patterns rather than rushing damage, then punish during safe recovery windows. After obtaining a new Biometal, revisit earlier zones to open paths and collect upgrades. Keep your health topped off before major missions, since several encounters can chain damage quickly. Strong movement fundamentals like wall jumping, dash control, and careful spacing are often more valuable than attacking constantly.

Tips and tricks

Memorizing zone numbers makes navigation much easier.

Tips and tricks

Model ZX is a reliable all-purpose form for most regular combat.

Tips and tricks

Do not overcommit during boss fights; wait for clear openings.

User Reviews

The transformation system gives both exploration and combat a distinct identity.

User Reviews

Its map structure can feel confusing at first, but it becomes rewarding once learned.