Operation Carnage

Operation Carnage is a top down arcade-style shoot-em-up for DOS developed by Midnight Synergy and released in 1996. It is now available as freeware. An alien invasion force has colonized planet earth. Now it is up to you to infiltrate their strongholds and completely eradicate the alien threat. Your mission: Kill everything in sight! Survive the onslaught and make your way through these bizarre fortresses, one stage at a time. Take no prisoners.