Download the app, open it, follow the tutorial prompts to understand basic controls, and start managing your checkpoint to familiarize yourself with core gameplay.

Your goal is to screen survivors, manage resources, reinforce defenses, and prevent infection spread while maintaining your base under increasing chaos.

Use the high-tech screening equipment available in the interface; scan survivors and analyze symptoms to determine who needs quarantine or further testing.

Navigate to the upgrades menu via the base management section to reinforce walls, upgrade weapons, and unlock new defense tools as your base expands.

Send them for testing in the lab; note that tests are fatal, so decide whether to attempt to save or conduct research based on your strategy.

Complete tasks, manage resources efficiently, and research samples; these actions grant you points used to unlock advanced equipment and upgrades in the base menu.

Yes, navigate to Settings > Account > Subscriptions to view available plans and purchase upgrades or additional content to enhance gameplay.

Yes, the game can be played offline after initial download; ensure all updates are installed before playing without an internet connection.

Try restarting your device, ensure the app is updated to the latest version in the app store, or reinstall if problems persist.

Monitor resource levels regularly; allocate them wisely in the base menu, prioritize critical needs like medicine and power, and upgrade resource gathering tools when possible.