A notable gameplay aspect is the scoring system based on jewels; When an enemy is destroyed, nearby bullets are converted into rins or jewels depending on the player's current weapon mode when destruction occurs. In "Pilot" mode, only bullets nearby an enemy unit are converted into rings, while enemy bullets close to those of another enemy are converted into jewels in "Gunner" mode respectively. When changing between shot modes, players can grab rings and jewels automatically. By having a high ring rank, players obtain jewels of high value and vice versa, however said rank is lowered by losing a live or using a bomb. At the end of each stage, players are evaluated based on how active their gunner was and overall performance.