You play as a young boy who's been bequeathed his uncle's 45 room mansion, on the condition that he can find the 46th room. Problem is, the mansion changes every night. You start at the entryway every morning, which has three doors to choose from. When you select a door, you're given a choice between three randomly selected rooms to put on the other side. Each room is laid out differently, and the idea is to choose rooms with doors that lead you to the final room on the far side of the house. Some rooms have multiple doors, some don't have any at all. Some have money and items in them. Some have smaller puzzles you can do to earn helpful prizes. Some have special effects, like bedrooms that restore your steps or dining rooms that serve you a meal. You start each day with fifty "steps" and going from one room to another counts as one step. The house doesn't look that big, but your paths will usually end up becoming so circuitous that backtracking through them will eat up your steps pretty fast. If you run out of steps or lock yourself into a dead end, you have to "Call It a Day" and try again the next morning when the mansion's reset itself.
I played it for a couple hours yesterday after work, and when I one room away from reaching the final room I thought "Well, that was fun. Too bad it was so short." Then I chose a hallway that would lead to the final room, crossed into it...and found the last door sealed shut. I was legitimately surprised. Apparently there are more secrets in this house than I thought. I don't want to spoil any more than I already have, but there are *special* rooms that you can only place in certain parts of the house or under certain circumstances, and those rooms will help you unlock other places even deeper in the house. I ended up finding a breaker box with switches marked for rooms I hadn't seen yet, a guard room that unlocked doors in a high security wing I haven't found, and a garage that looks like it'll lead somewhere else if I can manage to get power to the garage door. A quick glance online also had people talking about breakable walls and using items from certain puzzles in completely different rooms.
Needless to say, this game's got my attention.