From mod to stand-alone game, from Source Engine to Unity3D.
Raindrop is almost like combining S.T.A.L.K.E.R with Alan Wake.
Donate to the funding of Raindrop
After reading their Kickstarter page, I'm completely amazed at their goals. I'm very shocked that Unity3D can handle that amount of detail and weather conditions.
Raindrop just looks amazing and sounds like a whole new element to the Horror FPS genre.