for those of you who do not know what an SCP is or what it stands for...
scp stands for Secure. Contain. Protect. it's the motto of the scp foundation: a branch of government that captures and hides things that threaten the normality of everyday life. these abnormal things are also called SCPs. official site here http://www.scp-wiki.net/. remember that this is all just made up. none of it is meant to be taken seriously. there are several games on SCPs
SCP: Containment breach. mostly dealing with SCP-173 http://www.scp-wiki.net/scp-173. you can get it here: http://scpcb.wordpress.com/
SCP-087. a bottomless stairwell. there IS a secret if you go down far enough. (hehe...) you can get it here: http://scp-087.en.softonic.com/
SCP-087-b. once again, bottomless stairwell. this one, however, will constantly plague you with a murderous shadow with a white mask that WILL chase you down and kill you if you listen to him. ( if he says "behind you" ignore and keep walking) also, the stairwell is a narrow hallway at the same time. get it here: http://scpcb.wordpress.com/scp-087-b/
my favorite scp? SCP-999: the tickle monster http://www.scp-wiki.net/scp-999