Spriggan mark 2 was released on May 01, 1992 in Japan for 6800 Yen.
July 1992 - Joypad N.10: 76/100
Spriggan Mark 2 has absolutely nothing in common with Seirei Senshi Spriggan originally released in 1991. The first game was set in a fantasy world cleverly entwining ancient magic and technology. Spriggan Mark 2 appears to have a more traditional futuristic/sci-fi theme, reminding the likes of the Gundam and Macross animated series. Furthermore, the game is a side-scrolling shooter (whereas Seirei Senshi Spriggan was a vertical scroller) and the weapon system is far less elaborate. Finally, the game's story is heavily intertwined with the action - cutscenes and communications between pilots bookend the combat sections and advance the plot. Interestingly, the game's manual mentions that the Spriggan (and Spriggan Mark 2) mechas were actually created using ancient designs borrowed from an unknown and ancient civilization discovered on Mars - this is probably the only apparent connection between Seirei Senshi Spriggan and Spriggan Mark 2.