You’ll never know when you might need to abandon ship. Should you need to leave a level halfway through, simply:

• Select the in-game menu button. It is in the lower left-hand side of the screen and looks like a gear.
• Then select the red circle with the house outline in it.
• If you haven’t started the level - this will take you straight back to the main map.
• If you have already started - a message saying “Are you sure?” will pop up. Select “Give Up” and then close the “Retry” option. This will take you back to the main map.