I like seeing CryEngine mods, the engine brings so much visual beauty to bear without needing a huge production team. A great example is Clement Melendez' mod Call of the Fireflies. This little mod sees us take on the role of an old man following the fireflies while trying to survive the cold and solve the puzzles as we go through the frigid landscape.
These stills show the visual quality of the world he has created and the walkthrough lets us see how it all hangs together. Things are already setup very well in the CryEngine to support creating a cold world, with the small timber structures. The video still makes us look fast and able, I would have like the world to slow us down, even the wind. That said - super job.
[Screenshots from Call of the Fireflies via the official site]