In fact, thats the blockout Flash Version hosted on www.blockout.net. It was originally programmed 2004 by Serge Victorov, a professional russian programmer. Later on, it was discovered in 2006 by Andre Krause and modified to support online highscore lists. Andre Krause also put up the domain www.3dtris.de after its original name (this flash blockout was called 3dtris by serge.) in Summer 2006, the website www.3dtris.de was posted by Foenetik on http://www.digg.com/playable_web_games/3D_TETRIS, causing quite a rush on www.3dtris.de and creating a solid fan base of regular players.