Features:

1. Free to create: In sandbox mode you can create the units in any location and decide on their weapons damage resistance health movement speed some AI behaviors etc.

2. Rule changes: You can modify the rules of the game such as unit spawn system that can automatically spawn soldiers and zombies. As well as the game of time conditions of victory and defeat zombie infection etc. In short You can make the gameplay a big change by simply modify the rules. Of course if you do not want to do it by self I also give you some preset ways to play;

3. Third Person Shooter: You can create a soldier and control it to move aim and shoot;

4. Multiplayer: You can play with others online or play with your friends through WIFI router.