The Mega Drive's FM synth doing things it should not be able to do. The Story of Thor (known as Beyond Oasis in the west) pushes the Genesis sound chip into genuinely atmospheric territory. "Aqua" shimmers with these crystalline FM tones that feel almost liquid, and "Burning Cave" flips to aggressive, layered percussion that sounds massive for 16-bit hardware.
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Yuzo Koshiro's fingerprints are all over this. "Mysterious Green" carries an organic quality that makes you forget you're listening to a cartridge. The battle themes hit hard without being generic, and "Voice from Darkside" gets genuinely creepy.
This is peak Genesis-era composition. If you care about what the Mega Drive could really do when a top-tier composer was behind it, start here.