Seirei Senshi Spriggan

As the game starts a struggle for total control over elemental powers is about to begin between two warring nations. As the best mecha pilot in the good guy's army it's your task to repel the invasion and win the war by dealing with the enemy armada in standard shooter fashion. But surprise surprise! You won't be alone this time, as other AI-controlled mecha pilots will join you in the fray at key moments. Only you can command the magical powers that can be added to your mecha by collecting several color-coded orbs though, so most of the fight is still going to be up to you.