There is no Macintosh cover art on file for this game
Haunted Halls: Green Hills Sanitarium
Haunted Halls: Das Grauen von Green Hills - German title
Some of the necessary tools are received after completing one of the hidden object hunts, available on certain hotspots shimmering with red sparkles appearing on several locations. They take place on separate screens, where all the items from a list at the bottom have to be found amongst the assorted paraphernalia cluttering the scene. The hint button is a jar with arcing electric nodes at the bottom-right corner, showing the position of one of the required objects when activated, but taking some time to recharge after use.
Places with green sparkles have one of the mini-games, taking place on separate screens where mechanisms of some sort have to manipulated to solve them. Several puzzle variations are featured, where the player has to rotate circular sections of a picture to unscramble the image, rotate wires to complete a circuit and finish other similar challenges. They can be optionally skipped after a few minutes.