I don't think I can do ten...
1. Armored Core
2. Souls (of From Development, not the genre)
3. Shin Megami Tensei
4. Persona (yeah, it ain't the same as the above)
5. Disgaea
Honorable mention - Final Fantasy, which really went downhill for the most part, Metal Gear, which I haven't played the 5th game of, but love otherwise.