The crash watchdog is TowerLoop’s recovery layer for long unattended sessions. It checks whether the game and emulator are still alive, relaunches them when a supported failure is detected, and resumes the configured routine when the app is back at a known screen.
That is the gap the built-in post-defeat restart does not cover. A normal loss is one thing. A closed app, frozen emulator, or crashed session is a Windows/emulator problem, and TowerLoop is built to work there.
What It Recovers
The watchdog monitors the local session on your PC. When the game app disappears, stops responding, or needs to be brought back to the foreground, TowerLoop can relaunch it. When the emulator session itself is stuck, TowerLoop can restart the emulator path and bring the game back up.
After recovery, the watchdog hands control back to the automation you configured: restart handling, prompt tapping, or another enabled routine. You get a session that can recover from common app-level interruptions instead of waiting until you return to the desk.
Beyond In-Game Auto Restart
The in-game Auto Restart Run is useful for normal defeats once you have unlocked the Vault feature. It is not a PC watchdog. It does not supervise Windows, the emulator process, or app relaunch.
| Failure mode | In-game Auto Restart Run | TowerLoop crash watchdog |
|---|---|---|
| Defeat in a running battle | Restarts after defeat once unlocked | Can continue the configured routine |
| Game app closes | No | Relaunches the app |
| Emulator freezes or closes | No | Restarts the emulator path |
| Needs Windows-level monitoring | No | Yes |
This is why the crash watchdog belongs beside Auto Restart, not inside it. Auto Restart starts the next run; the watchdog brings back the app or emulator when the session itself goes down.
How It Uses ADB
TowerLoop communicates with your emulator or Android device through ADB, Google’s Android Debug Bridge. ADB lets a Windows computer communicate with an Android target you control, launch apps, inspect state, and send local input.
For an emulator running on the same PC, that connection stays local to your setup. You can read the setup details in the main setup guide and the broader emulator notes in the emulator guide.
Practical Limits
The watchdog handles app and emulator recovery. It does not fix every possible overnight failure. A Windows reboot, a power outage, a network outage, a login prompt, or a required game update can still need user attention.
The right setup is straightforward: keep Windows awake, give the emulator enough resources, keep the game and emulator current, and let TowerLoop handle the repeatable recovery path. For a troubleshooting walkthrough, read The Tower overnight crash fix.
TowerLoop is independent software, and users remain responsible for the rules that apply to their own account and emulator setup. The product-scope and account-rules summary is in the FAQ.