Transformer 3 War Of Cybertron

You control Optimus Prime, moving him left and right with the arrow keys. The space bar fires his blaster at the incoming drones and other enemies. A key feature was the transform mechanic, often mapped to the shift key, letting you switch between robot and vehicle modes; each form had slightly different movement or attack properties. Your main objective is to survive the assault, clearing each stage of enemies to advance. The pacing is constant, with enemies arriving in steady patterns, and the difficulty can ramp up quickly if you don't manage your positioning. It feels like a brisk, arcade-style shooter where quick reflexes and using your transformation at the right moment make the difference.