Nightmare House 2
A truly amazing mod for the Half-Life 2 engine has grabbed my attention, hard. Nightmare House 2 is a sequel to the older map pack of the same name, minus the numeral. Now a full blown game, complete with ocassional buddy AI and an interesting and difficult end boss, NH2 is meant to be atmospheric and creepy. I would put the scare tactics on a F.E.A.R level with maps and items changing around you, sometimes ever so slightly, putting you at unease quite successfully. Part one is included and you have to wait until the credits finish before part two starts. Don't let the amateurish design of part one fool you, the sequel is worth the wait.