Retro Invasion (itch)

Game Information: In Retro Invasion you can choose which game mode you want to play, in Campaign mode you have to kill and stop the monsters, the monsters are not allowed to conquer the world. In Invasion Mode you have to kill all monsters and finish each level without dying, if you dont make it it it starts again. But if they succeed then the monsters have no changes to conquer the world. Key cards information: The key cards are important because you cannot enter any other room without a key ca...