Nier, its whole OST is amazing. One of the best OSTs ever.
Child of Light - Auroras theme, one of the best RPGs in recent years with similar to old school combat with a twist
Journey, its whole OST is also amazing, powerful and the music can bring me to close to tears alone
MGS3, Starsailor - way to fall (lyrics are perfect in game)
Last Ninja 2
Kabuki QUantum Fighter
FFX-2 theme
FF9 theme
I could go on and on with both chiptune music & todays music for probably 600 pages myself