Is there a cheaper version of Call of Duty zombies?

Yes, there are several cheaper alternatives to Call of Duty Zombies. Games like "Left 4 Dead," "World War Z," and "Dead Rising" offer cooperative zombie-fighting experiences at a lower price point. Additionally, many indie games, such as "Project Zomboid" or "Unturned," provide engaging zombie gameplay without the higher cost associated with the Call of Duty franchise.