Survive for as long as you can in "Survival" or do the same while also defending a Helicopter in "Protect" (which will give you start off money and more health to help you out). As each day passes the enemies get harder and you get stronger. Earn XP from killing foes or picking up randomly dropped dog tags then spend it in the shop on new weapons, upgrades, perks and sentry guns.
Some of the features include:
- Multiple Leaderboards
- 30 Newgrounds Medals
- Day and Night Cycle
- Fancy looking projectiles and lots of blood
- Developer Console : Mess around by making the ultimate weapon, makes enemies spawn like crazy or give them all explosive weapons.