YMMV / BIOMETAL

• Awesome Music: Both the US soundtrack and the Japanese soundtracks. Such as "Dark Clouds" from the Japanese soundtrack.
• Broken Base: The US soundtrack by Two Unlimited— Some prefer it over the generic soundtrack the Japanese version has, while others say it doesn't fit the mood at all.
• Demonic Spiders: The laser-shooting ships◊ in stages 3 (who reappear again in later levels). Your shield is unable to block their devastating lasers, which will more often than not cost you a life or two.
• Difficulty Spike: The third level, which introduces those laser-shooting enemies, and a Damage Sponge Mini-Boss.
• That One Boss: The miniboss of stage 3 takes a very long time to die without the laser. And the final boss also counts, it starts flooding the screen with lots of Hyper Destructive Bouncing Balls, making it a pain to avoid.