Pretty good series of horror games. I remember playing #1 a few years back, maybe even whilst at college. It was pretty unique in the level of gore, and high quality sound, pretty freaky playing with headphones in a dark room at night.
Ex Mortis 1
http://www.newgrounds.com/portal/view/189227And then last year, or 2 years ago, #2 was released.
http://www.newgrounds.com/portal/view/303832It takes the award for being the first flash game that has given me nightmares. The night after I played it, I dreamt that it was post-apocalyptic and everyone was dead. Something about the back story/newspapers/setting makes this game pretty awesome.
And, on monday, #3 will be released. AFAIK the series is intended on being a trilogy, so hopefully itll wrap some things up. Also, since the guy made #1, he has become employed by a web studio, and so I think #3 has been professionally (sort of) produced, so quality should be even better.