Hexion (c) 1992 Konami.
A good tetris game. This game has hexagonal atoms-based block instead of the normal tetragonal atoms-based blocks.

>>> TECHNICAL DETAILS
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Game ID : GX122
Main CPU : Z80 (@ 6 Mhz)
Sound Chips : OKI6295 (@ 8 Khz), K051649 (@ 1.5 Mhz)
Screen orientation : Horizontal
Video resolution : 512 x 256 pixels
Screen refresh : 60.00 Hz
Palette colors : 256
Players : 2
Control : 8-way joystick
Buttons : 2

>>> TRIVIA
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Originally designed by David Markley, who distributed the game as XHextris in the 1990 X11 R5 contributed release, from where it has migrated to current X distributions.
Konami licensed the concept and released Hexion in Japan.
This games has some cameo appearances from Konami characters like TwinBee and Penguin.

>>> TRICKS AND TIPS
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* Voice Change : hold Left Turn Button (Button1) then press START Button after you have inserted a credit. Japanese voice will be changed to English.

>>> OTHER GAME RESOURCES
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Game's rom.