The last of them: Parts is a casual game where you control a world war 2 soldier. Survive and accomplish certain objectives, which will increase your rank unlocking new weapons and missions. There are different zombies, some of them are basic infantry soldiers but there are also more complex subjects...

Weapons Are Divided By Class

Infantry: M1 Garand, Mauser Kar 98k, Mosin Nagant...
Assault: Thompson, MP40, PPSh-41...
Heavy assault: Browning M1919, MG42, Bren...
Sapper: Ithaca 37, Flamethrower, Bazooka...
Sniper: (Scope) SVT-40, Springfield M1903, Arisaka...
There's a selection of pistols available in its own group.

Each weapon has different stats

Damage
Magazine capacity
Cadency
Reload time
Reach
Weight (slows movement)

Unlock equipment through rank

Up to rank 77
More than 50 weapons
Improve physic stats like speed, jump, stamina
Radio calls seeking airstrikes or supply cargo