This game emulates Tetris for the Gameboy. It is less than 2.4kB in size, the smallest one of all the graphic Tetris games, and barely larger than the smallest Tetris ever, Tore Bastiansen's Small Tetris, less than half of Marko Kleine Berkenbusch's Tätris. To my astonishment system requirements aren't all that low, it wouldn't run on my IBM PS/2 50. According to the author, it requires a 386, and it will run only on MS-DOS or Windows, not even on PC-DOS (it does run under DOSBox). I couldn't get it to run on a 386 booted from a Windows 98 boot disk either, but this is hardly a problem. There are far more small games that run on old computers than there are small games that run on modern computers, and that's what TinyTris does.
For a long time, TinyTris was the only Tetris from the UK in my collection, just as Tetronix was for more than a year the only one from France. Meanwhile, it has been joined by Drop 'em and Blox (There are a couple more, but none of them is a classic Tetris). It is interesting that Tetris games usually come from countries that are otherwise not big names in the gaming scene.