How do I know if I have found all the bats?

When playing each level you can tap the pause button to see a total of the bats in the leve and what you have found on the top left.

In the level select screen you will also see a bat / magnifying class icon. Tapping this will show the bat number on the door to each level so you know which levels you need to replay to find them all.

For more questions for Tricky Castle check out the answers page where you can search or ask your own question.