Escape the Mansion is a point and click room puzzle game for mobile. It's been around for quite some time and though it is not the first of its kind, it still is still pretty fun game to play especially if you have some time to kill.
Me and my friends have this app on our phones and I can say that it got us addicted. The visual is neat enough and the difficulty of levels are progressive which is good so a player start off with easy levels where he or she may learn the hang of it and as you play further you will be faced with more challenging ones.
Anyway, here's Escape the Mansion level 156 to 160-ish walkthrough demonstrating how they are solved.