I played for hours as a child and wanted to show it to my children 7 and 4 years. This version is zero and I will hasten to regain my good old doctor crazy! The slots into which you insert the objects are so large that no risk of touching the edges and to sound the alarm. We were forced to play with his left hand to give the lure the game !!! I note that there is no tray that the requirements have been revised downwards ...! :)