I voted somewhat but could readily change to certainly depending on how the ensuing discussion fleshes out OP's use of 'zombie game'. I'm fine with either, really.
Zombie games are typically either H&S and combat by numbers like World War Z or Rebellion's Zombie Army 4, which is at stark odds with TLoU gameplay but not narrative nor necessarily item economy vis-à-vis weapon/ammo scarcity, item poverty, checkpoint save architecture; or, they're stealth horror like RE and TLoU.
I only lean somewhat here in vote because the former type is more my mental image when I hear gamer talk on anything 'zombie'.
Related, Days Gone is interesting as a same-space title that hybridises both types of zombie game plus RPG-lite elements.