Thriller N.T.

You roll with your game ball through a labyrinth of tracks and collect all the hearts on your way. At the last heart a bell sounds and the exit(s) open. Enter it and the level is solved. There are basically three different types of exits: Two of them take you to the next level (E and N - like EXIT and NEXT), the third one takes you to the previous level (P - like PREVIOUS). To play all levels, a trap dictionary is required.