a game in the future
Imagine if this game would be 3D... (using the Beetle 3D extension)
Would be cool.
Do you mean that you're announcing a project you haven't written yet? What's the point of that?
That would be a challenge to make, as you can't really import .obj files into Beetleblocks, so you gotta make every 3D Model yourself 
And you can't even move models you create, so it's even harder to make a 3d game.
BUT you can definitely decode obj files and technically import them.
Extruding the whole object, especially in different colors is near impossible. Only the absolute pros can do that, even by not talking about decoding .OBJ files...
to get people ready
its like movies they make trailers for it
But companies don't necessarily advertise movies before anything's created. There would be nothing to have in the ad!
that would be hard, but I'll try
Here's a tutorial. It may take some time to read though 
i made my own beetleblocks game but i forgot to save so its lost it had orbit controls and movement it was a 3D plat former it took so much work!!! but its lost ):
beetleblocks wont respond 