This build was made in December 17th, on 5:21 PM. This Build got back the "3D" look *but sunny and improoved a bit the trees*, the engine worked fine but sometimes you might be a stuck on a part or more shortly the hitbox isn't that great then touching a part. They made the avatars more charming in this version but still looks quite off. And the Ui has changed and used a bit from the late 2014 Ui. This was the last time they used this background theme.
Thanks @greensonic35