Cyberix3D - Free Online 3D Game Maker

if this is already possible please tell me how.

Hello,
You can implement a Day/Night mechanism yourself by using a rotating light + texture alpha for the sky.
You can put two cubes, one with night texture and one with day textures, and play with the alpha according to the sun's position.
We have made an example:
www.gamemaker3d.com/player?pid=01657138





Regards,
Cyberix3D team