I'm currently working on two small indie projects in the new SDK for the CryEngine 3. Both are first person, and both feature no weapons or HUDs of any kind. They aim to be a few hours long each and differ wildly in tone.
I intend to keep them visually distinct through colouring, filters, and lighting while their texturing and models will remain simple. I'm doing all the modeling and animation myself in Maya.
Much more will be added including concept are, videos, possible Alpha and Beta versions, and eventually the finished product. Both games will basically be large mods for Crysis 2 until the SDK has a decent compression tool for making stand-alone projects.
The games will of course be available for free.