Parasitic Business is a roguelite strategy and turn-based combat game.

The story begins in a world where humans never existed; instead, there are monsters with unique abilities. In this monster-inhabited world, an event occurs that causes all monsters to begin civilizing and coexisting as humans do today. In a multinational corporation, there\'s a small janitor who is treated very poorly by everyone. He decides to take revenge on the entire company by climbing floor by floor to bring down the corporation. Frat, our little cleaner, has the ability to gain power and strength from rivals he devours after defeating them, making him stronger as he advances through each floor.