Cyvern Plus (サイヴァーン プラス): The Dragon Weapons Version 1.1

This may be a location test version in 1999, the game was never released.
Very strange C button
Strong Schwarz
2000 points when hit
Double bonus mode from 4th stage
True Boss with 0pt
Bomb that instantly kills the boss and score 0

[@JamesEmirzianWaldementer]

Super rare arcade game version of Cyvern.

[@rzm333]

Awesome, full version now ! Thank you very much

[@martinhernandez656]

Please dumped to mame final burn neo

[@nrk9255]

点伸びてるけど最近やったんこれw