New Episode is mostly about 3 new mechanincs:
1. Valve and vapor. Valve is generally a switcher to turn vapor On \ Off. Vapor can extinguish fire and conduct electricity.
2. Swallower. Eats metal objects with no limits.
3. Magnet. Can be moved and rotated, pulls metal objects.
Overall it took about 200 hours to implements 7 new objects + 20 hours for level design.
The game is available in Steam Early Access Store.steampowered.com