Summer Carnival '92: Alzadick

Like in most games of the kind, the player controls a spaceship and tries to eliminate or avoid on-screen enemies. Power-ups take the shape of the letters A, B, C, and D; each corresponds to a weapon of specific color and properties (e.g. spreading fire, side fire, etc.), though they are fairly similar to each other in function. A powerful sub-weapon that hits all enemies on screen comes in four variants and can only be used once.