I love Tetris. I have played it so much that when I close my eyes, I can see the little pieces falling into place in my mind's eye. All I can say is that 3D Builder is next level! Or should I say next dimension? Play using your keyboard or with your mouse and the in game buttons. Every piece can be rotated every which way and you can swivel the column around for different views. It is more complicated that it sounds and a challenge I would highly recommend.