Yes. It is totally free.
You have to follow the instructions that appear in the screen, at the beginning of each level.
This is a starting version of the game, it has 3 levels. In the future, we will be adding more.
In the beginning of the game, and only once, you will be gifted with 500 "skulls".
As described in the game "Tutorial" you can buy them at the App Store, or watching the "Ads" videos. Or taking the "skull" that every dead zombie will give you.
Because you have 10 seconds to take it, since the zombie has dead.
Because they are alive, if you don't want they hurt you, you must exterminate them.
Not in this version. We will be adding more in the next versions.
In this version, you have three different chargers.
1- Ingram Charger: It costs "24 Skulls", and it has 15 bullets.
2- Pistol Charger: It costs "3 Skulls", and it has 20 bullets.
3- Sniper Charger: It costs "12 Skulls", and it has 5 bullets.
If you pick them from the stage, they won't cost you any skull.