The Tengen version, of course.

Well, it's a lot better than the cruddy NES version that Nintendo made, and I got about 30000 on my first try. Just need to make my emulator save information.

Graphics are nice, sound is nearly perfect (I want the theme A from the Nintendo NES version in it and for it to increase in tempo if you're too high), and controls are decent. Pick this up if you want a good Tetris game.

Or to increase your collection, these are R5.