I've been looking at a lot of reviews for the game and SOME gameplay (don't wanna spoil it for myself) and so far the game looks phenomenal in regards to how well it runs with the amount of zombies on the map, the gameplay, the classes, loadouts, and also more stories being added later on for FREE? This title definitely appears to be worth $40.
The only issue I have with this title is the fact that it's on the Epic store as opposed to Steam which has unfortunately turned me off of the game for now. I'm glad they decided to launch with Epic so they could get paid more but they'd sell far more copies on Steam for the price point and Steam is the better launcher overall. If they decide to launch on Steam I 100% plan on not only buying the game but buying it for a few friends that I know would appreciate the title as much as I would.