It's on Steam too

The downside is you have to pay or wait for time to pass to open the chests, but on the other hand, you can use cheats... If you play on your phone, you can watch ads and open chests right away, which is a plus. Whether you clear a regular map or an event map, you always get chests, but the number of slots... was it 4 or 5... If the slots are full, you can't receive chests even if you clear a specific map. You need to open chests to get upgrade materials and gold - there are also chests that drop diamonds for exchanging specific items - so it's a loss if you can't open them. Weapon upgrades are sometimes obtained by opening chests, and upgrades are done by dismantling junk items. Usually, you'll use explosive rounds, quad-barrel cannons, and napalm cannons. Ammo management can be done by changing weapon loadouts depending on the map. Your role is to protect the ground teams from zombies from the air. The position is the same on event maps, but they come in large numbers... Napalm is essential.. Some weapons have infinite ammo consumption, notably the quad-barrel cannon and landmines. Just try playing it. It has a satisfying feel, and it's fun to use night vision goggles and blast away from the air.