Masken has updated his site with this news on the progression of his Gamecube Emulator for Windows:

The second playable game has been discovered. It is Tetris Worlds, and there are screenshots. Enjoy!

<img src="http://whinecube.emulation64.com/img/screen/thumb/tetris_03.png">

More images etc at the homepage --> http://whinecube.emulation64.com/