The patch makes a large improvement to graphic quality and game play. Talking a 3.5 GB patch here. Basically the size of a whole game. The DLC is a lot more fun than I anticipated and even the hater trolls on steam forums have to agree. It is worth getting. I spent all night, glued to the game..lol.. Bug hun is tons of fun and the improvements are a noticeable improvement. Think Nazi Zombies but with Aliens. I am a happy bug hunter..