Rob the Rich requires an internet connection to play to ensure your game progress is saved to our servers.
That being said, you can still play offline once you've already loaded the game. Note that some features that depend on internet connection will become unavailable, like Ads for Double Cash, Free Packs, or in-app purchases.
Please keep in mind that if you experience any game or device crashes while playing offline, some of your progress may be lost due to that data not being sent to our game server.