Warning Forever is a simple shooting game where you control a tiny green ship and proceed through the levels. You face huge spaceships outfitted with cannons, lasers, rockets, and other weapons. It is a 360 degree shooting game with vertical shooting. It lets you adjust the cannon to control the direction and range of your fire. You have only the boss ship to fight and the bosses become stronger as you beat them. Your time limit increases when you defeat the boss but decreases on losing ships. You need to defeat all the bosses within the time limit to win the game.
