Advice Needed Need help on new games to pick!

Hey there!
I wanted to get advice on some zombie games i could buy.
I really like fast paced hard zombie games where you get surrounded easily and need to fight your way through, but i don't like them to be too easy.
Maybe with a leveling system? Survival aspect?
I really liked:
Dead island (Riptide too)
Project Zomboid
Thanks!