"The renewed version of the classic Tetris, with distinct pieces."
Multis is the renewed version of the classic Tetris, with distinct new pieces and a new totally personalizable look. Multis includes pieces in up to 10 different shapes, various modes and difficulty levels, to guarantee the game lasts. An advanced Tetris, definitely.
The configuration options cover from designing your own pieces (something quite unusual in this type of game), to changing the background image, music and sound effects, downloading skins for the interface, etc. All these you can find, with more information, on the author's website.