Army vs Zombie is a free simulation game developed by NBROGAMES for Android users. The game is set in a post-apocalyptic world where you have to fight off zombies and other enemies to survive. With over 3,000 stages to play and an additional 1,000 stages soon to be added, Army vs Zombie promises endless challenges for players.

One of the game's unique features is its easy battles and auto-battle system, which allows for faster battles, making it easier for players to progress through the levels. The game also features an idle game with the world boss, which means that players can join raids without doing anything, making it a great option for those who prefer to play casually.

The game also allows players to collect various battle units in idle mode, which they can use to become even stronger. With the ability to merge units, players can achieve a more strategic victory by composing the optimal deck. Overall, Army vs Zombie is a great game for fans of simulation games who are looking for a challenging and engaging experience.