This list refers to the original music. I purposely tried to be fair to different styles, but I can't help the fact I focused on certain series or composers.
1. Castlevania IV
2. Castlevania III
3. Castlevania II
4. Castlevania
5. CV: Bloodlines
6. CV: Symphony of the Night
7. Dracula X
8. CV: Dawn of Sorrow
9. Mega Man 2
10. Mega Man 3
11. Street Fighter II
12. Ys
13. Ys II
14. Streets of Rage
15. Streets of Rage II
16. Sorcerian
17. Rayforce
18. Kaiser Knuckle
19. Guilty Gear X (Dreamcast OST)
20. Guilty Gear XX: Korean version
21. Madara
22. Lagrange Point
23. Gradius III
24. Turok 2: Seeds of Evil
25. Spider (Playstation)
26. Phantasy Star
27. Zavas
28. Star Ocean 3
29. Contra 3
30. Snatcher
P.S.
These are excluded from receiving points, but are worth mentioning: Castlevania II: Belmont's Revenge, Xak III, FF (series), Chrono Trigger, Insector X, Double Dragon I & II, Ninja Gaiden I & II, Metal Gear (series), Legend of Zelda (series), Super Mario Bros. (series), Blaster Master, Batman (NES version), Lifeforce, Brandish I & II, Legend of Xanadu, Ys III, Ys IV, etc. etc. etc.
You can see some of the sacrifices I made while making the top 30. I edited the post because I had initially made a top 20, so I changed it to a top 30.