Want more?

http://www.planetminecraft.com/project/false-reality---horror-adventure-map/
-Can be done under ~5 mins.

http://www.planetminecraft.com/project/scp-087-b---horror-adventure-map/
-Might be buggy (night vision effect not apply on some players, maybe they use 1.6.4+ version), can be done under ~10 mins.