: A realistic, first-person co-op survival horror game built on the Source engine that focuses on teamwork and limited resources. Where to Download Safely
: A popular, massive multiplayer sandbox where you survive in a zombie-infested world by building bases, crafting, and teaming up with others. zombie-game-pc-game-free-download-full-version
If you find the free options lacking, these are the most highly-rated zombie experiences currently available on PC: Dead From Beyond by Emiss23 - Itch.io : A realistic, first-person co-op survival horror game
: An open-world multiplayer RPG shooter that offers large maps, extensive weapon customization, and both PvP and PvE elements. : A realistic