MAY THEN VALIS BE WITH YOU
The original was released in 1986 for the PC-8801, but for some reason this one has worse English and a very different health power-up drop system. Also this one doesn't have copy protection(?) that kills me when I pick up the Double Bullet power-up, which is why you're getting a video of this one.
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Mugen Senshi Valis (夢幻戦士ヴァリス, Mugen Senshi Varisu), also known as Valis: The Fantasm Soldier or...