Protect your property Shoot the approaching stickmen by clicking on them. Make sure to reload your clip when you’re out of ammo! See the ammo status in the top left of the game screen. Upgrade your defenses The gameplay works in day cycles, with each day getting slightly more intense than the last. At the end of each day, you can upgrade your defenses. You might not need to make many upgrades in the first few rounds, so hang tight and save your cash! Here’s what the upgrades do Gunmen shoot automatically with variable accuracy Craftsmen repair your stronghold when you’ve been attacked A silo shoots missiles and requires silo workers to function Wall upgrades and fortifying increase your maximum health The sniper rifle upgrade doubles your damage