Download from here

Original game was developped by Jay Geertsen in 1989 for the HP-UX operating system. SEGA acquired the rights and released it for their consoles. Game was later ported to many platforms (including 8 bit computers and mobile phones). There was already a version for the VIC-20, called ViColumn, but it is different to the original one (more rows / columns and it doesn't check diagonals, just horizontal and vertical lines). In this version I have tried to mimic original SEGA version.
As for the music, I would have liked to include original 'Clotho' theme (music in this game is very distinctive...), but I wasn't able to come up with something that sounded even close (I'm terrible with music) so have included thre classic themes that will play on loop (every 30 gems, level is increased and the theme music will switch between one of these three). As soon as you get fed up with the music (very soon, I guess), you can mute it by pressing 'M'.
Cheers