I remember spending many hours as a child playing Tetris. I actually got pretty good at it, although by the same token was probably slightly addicted to it. Even now I believe my ability to pack objects, particularly boxes into car boots, has come from my Tetris knowledge.
Tetris, I think, is one of those iconic moments from childhood. A classic game which I will introduce to my children soon. To start their Tetris journey I have introduced them to the shapes from the game using my Tetris light.