(MD) Columns

Puzzle game developed and published by SEGA first released for arcades in 1990 and then converted to Megadrive few months later.
The player has to align falling columns, made by 3 different jewels, in order to match symbols of the same colour in horizontal, vertical and diagonal; sometimes a magic jewel appears and after landed it destroys all the jewels with the same colour as the one underneath it.
The Megadrive porting was nearly identical to the original arcade game.