So this one may not be available, but I really like the idea. The lines clearing definitely adds a different element to the lamp. There is one Tetris lamp on the market, and it is the constructible Tetris light from Paladone. If you haven’t seen it yet, make sure to check it out.
If IKEA Made Geeky Furniture is a series of design concepts made for geeks by a geek. These are not actual products for sale.
This one is pretty self-explanatory: a lamp based on Tetris. The light would come from a “Tetris”, the clearing of four levels at once. I felt a 4-sided lamp would look good, and could use an old-fashioned bulb inside.