It switched from Unreal Engine 3. The additions in this update include a new reception area to explore, along with four new resolutions above 1080p. They also fixed corner collisions.
The volume on audio logs was also tweaked. The studio has begun work on transitioning to 3D exterior environments, and includes some new wall pylons.
The pre-release demo for Caffeine is available as little more than a tech demonstration for the moment. The game itself is about a caffeine mining space station seemingly abandoned, which is bad news for us as we play a young boy.