New zombies need to be defeated in Square Head Zombies 2. Go to new places, find and destroy them all.
Now you can get a discount to purchase Square Head Zombies 1 and 2.
Go to the link below and get the games with discount.
https://store.steampowered.com/bundle/7267/Square_Head_Zombie_Collection/
If you already have one game and don't have the other, you can get the discount for the game that you don't have it yet.
