100 DAYS - Zombie Survival is an action game where you try to survive ceaseless zombie attacks. To do so, you'll have a machine gun and, more importantly, the help of other survivors.
At the beginning of the game, you're alone, so you'll have to rely exclusively on your aim. As you make money, however, you can recruit new survivors to join your cause. With the money, you can not only recruit others but also improve your own attributes. You can make your attacks more damaging, improve your defenses, and so on.
In the game, every day you'll face a horde of zombies that's stronger than the one that came before it. As if the zombies weren't enough to worry about, you'll also have to face a boss (a giant zombie with lots of life points) after each wave.
100 DAYS - Zombie Survival is a very entertaining game. Although it doesn't have a particularly original approach, it's a good game that's perfectly adapted to touch screens.