http://devilstuningfork.com/download.php (http://devilstuningfork.com/download.php)
Devil's Tuning Fork is a First Person game, but it isn't a shooter. In this game, you are blind. The world is black, and your character is only aware of his surroundings through echo-location, provided by the titular Devil's Tuning Fork. It's pretty hard, but I suggest trying it out just to see some real innovation in a genre that is diluted by clones.
(https://rmrk.net/proxy.php?request=http%3A%2F%2Fgames.softpedia.com%2Fscreenshots%2FDevils-Tuning-Fork_1.jpg&hash=25ec61c9c5b5d19e93ac9c56523759a53eb1af21)
(https://rmrk.net/proxy.php?request=http%3A%2F%2Fgames.softpedia.com%2Fscreenshots%2FDevils-Tuning-Fork_5.jpg&hash=81940cc20aebb8f326c3346f25fdf2dcae0efffd)
(https://rmrk.net/proxy.php?request=http%3A%2F%2Fgames.softpedia.com%2Fscreenshots%2FDevils-Tuning-Fork_3.jpg&hash=a377093444bce08fc0b4043c92d72d108b941673)
currently downloading, the name caught my eye and the game looks pretty awesome.
edit: first level, totally creeped out. I love it.