The player moves around the boundary of a rectangular field and begins a line into the unclaimed interior. The craft must reconnect with a safe edge before an enemy touches the trail. Successfully enclosed regions are filled, and the stage is cleared by capturing the required percentage of the field.

Stages contain roaming enemies and sometimes smaller hazards that make long cuts risky. Captured areas reveal the background image and may remove space around enemies. Progression comes from completing successive stages, with tighter routes and more demanding timing rather than an inventory or character upgrade system.

Start with short cuts when enemies are close, and use the boundary to plan a safe return route. Long diagonal captures are efficient but leave a larger trail exposed.

Watch enemy movement before committing to a line. Capturing a region that contains an enemy can be valuable, but only if the route back to the boundary remains clear.