Vadim went on the record, and it looks like it was a combination of tetra and tennis afterall! http://vadim.oversigma.com/Tetris.htm
That pretty cool, he's revised all his information. A new primitive game he worked on, Antix, has been found and is available for download. Also apparently that first IBM Tetris has an Easter Egg in it. Anyone here up to the challenge of finding it?
Sorry to dig up this extremely ancient thread, but does anyone know what the afore-mentioned Easter Egg in the game is? I've played versions 1.0 (TETRIS.COM, circa 1986) and 3.12 (TETRIS.EXE, circa 198 for quite a few years now and have been unable to discover it. P.S. I'm currently working on/with a DOS TSR that will change the tet colors in the game to guideline colors <G> -