Thank you - I must have not been looking - we just did finding the Princess and only had 2 mini kits to find - we found 1 (room opp where princess is) without seeing any arrows and I didn't notice any arrows appear as I was doing the level - i'll look more closely next time - once you've bought the detector does it automatically work - I don't need to do anything to make it function do I. (can you tell i'm a gaming novice). Thanks for your help