Merge/Create models

I’m not too keen on 3D model creation and working with blocks and such would be very sufficient for me, however I would expect it to slow down the game terribly if I were to make a blocky city or large open world. I was wondering if there is any way to place some blocks some way, select them and then have them all become a single model. Or possibly to deform and shape a block into the model I’d like it to be.

Take a read of this:

Should help you out.