The game uses a side-scrolling perspective. Players guide Captain Tomaday through a sequence of stages, destroy formations of enemies, avoid hazards, collect useful items, and defeat a boss at the end of each area.

Captain Tomaday's attacks are tied to his changing body forms, giving the game a gimmick beyond standard projectile shooting. Progression is arcade-based: surviving advances the stage, while losing all lives ends the run unless another credit is used. Score comes from defeating enemies efficiently and collecting items.

Stay near the center of the screen so you have room to react to enemies entering from either side. Learn the timing and approach patterns of bosses instead of spending lives trying to force damage.

Prioritize threats that can restrict movement, and collect power-up items when doing so does not expose you to unnecessary danger. Because the game is designed for arcade runs, memorizing stage layouts is often more valuable than taking constant offensive risks.