Support

Tap DEPLOY on the Base screen. Tap enemies to fire on them (your guns also fire on their own). Survive as many waves as you can; cash earned in battle buys upgrades in the ARMORY, and Research Points unlock new tech in R&D. Each theater has 100 waves, and clearing one opens the next. Settings > How to play has the full guide.

Open the STORE tab and tap Restore purchases at the bottom. Make sure you are signed in with the same Apple ID you bought with. Gem packs are delivered right after Apple confirms the payment; if it still is not there, email us with the date and the pack name.

Buy Remove Ads in the STORE tab. It removes the full-screen ads between runs for good. Rewarded ads (watch an ad for a bonus) stay available because they are always your choice.

With iCloud turned on for the app, your progress syncs to your other iPhones signed in to the same Apple ID. You can also make a manual backup: Settings > Back up progress copies a save code. Keep it somewhere safe, then on the new device use Settings > Restore progress, paste the code and tap RESTORE twice.

Settings > Reset progress wipes cash, upgrades, research, medals and theaters. Gems and purchases are kept.

Sign in to Game Center in iPhone Settings. Your daily challenge wave is posted to the daily leaderboard, and achievements unlock as you clear theaters, hold waves and rack up kills.

The game can remind you when research finishes and when a new day's missions are ready. Turn reminders on or off in the game's Settings, or in iPhone Settings > Notifications.

Lower the graphics quality in Settings. Closing other apps and turning off Low Power Mode can also help.