The Gloud Games servers can detect unusual activity. If they find you are using a modified client, your account and device ID could be permanently banned.

Many "Hack APKs" are injected with malware, spyware, or adware that can steal personal data or damage your device.

Coins are the currency used to "rent" games. Hack versions often show a maxed-out coin balance in the user interface. The Risks of Using Modded APKs