The Mansion

I like this one. It's silly, clunky and buggy, but the atmosphere is very nice and it reminds me a bit of the old "Last Half of Darkness" games. You die every few minutes from going in the wrong direction or touching something you weren't supposed to touch. The puzzles are rather simple, but at least among the first few there are some that are clerverly integrated into the environment.

I would recommend it on sale for people who are into atmospheric, slightly broken puzzle games.