Travel between an outer and inner orbit to avoid targeted beams across six stages. Waves increase from 12 to 22; later stages fire at both rings simultaneously with shorter warnings.
Move around the orbit with A/D or W/S. RETURN switches between inner and outer rings. Occupy a diamond-shaped energy pickup at the instant of firing to score. Consecutive pickups earn 1, 2, then 3 points. Remaining at a targeted location causes damage.
Directions work on the keyboard or pad; the pad button also acts as RETURN. SPACE opens confirmation to restart this stage. NO is selected initially. Choose with A/D, confirm with RETURN, or cancel with SPACE. Play pauses during confirmation. CTRL+C returns to BASIC.
Semigraphics draw both rings. Movement trails, extending beams, and pickup flashes show the action with matching sound. Small orbit points, targets, and energy have different shapes. Wait for animations to finish before pressing again.
HULL is health, IMPACT counts down to firing, WAVE shows completed/required waves, and ENERGY is your score. Energy at least equal to the required number of waves earns GOLD ORBIT. Choose when to chase a pickup and when to retreat to a safe orbit.
