Here is my tiny list. Sadly, I was unable to backtrack some of the games I loved.
Defiance a puzzle game that will blow your mind. Expect things to happen in your brain.
Polychrome a solid platformer using colors in an ingenious way.
Self Reflection because the IA you fight is someone you know.
./- because it is way too cute.
Only One Breath some escape-game that really amused me.
One One Phenotype is allowed a tiny bug with colors but it conveyed an awesome "be a researcher" feeling. I felt curious while playing, and it is an awesome feeling.
Heart Of Bronze if you wanna laugh.
A song I listen to while jamming