SMF (midi) rings
 Cat's Eye
 Lupin 3

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Arkanoid
 Level start

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Bomberman
 Solo mode

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Castlevania
 Bloody Tears
 Vampire Killer

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Golden Sun
 Battle

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Final Fantasy 4
 Battle

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Kingdom Heart
 Theme

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Mindbomb demo
 Main menu

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Pacmania
 Block town

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Speedball
 Main theme

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Those rings are in SMF (midi) format. Suitable for phones like ts21i, m341i and any other midi-compatible device.