Contra Online

You control a soldier running from left to right. Your job is simple: shoot everything that moves. Aliens, robots, and soldiers pour onto the screen from all directions. You jump over pits, duck under fire, and try to grab power-ups that change your weapon. The main goal is to fight through each stage and defeat the boss waiting at the end. It moves fast. One moment you're clearing a path, the next you're dodging a wall of bullets. The difficulty feels authentic; you learn the patterns or you start over. Playing it feels like a focused, hectic scramble from one firefight to the next.