I'm requesting for recommendations for games that stand out from the rest in their genre, and not in the sense of being the best game in that niche but actually bringing something new and innovative to the table. I've not had much experience in gaming, but I have a few games to give you a hint on what I am talking about:

• Superhot: Time only moves when you do
• Viewfinder: Convert 2D pictures seamlessly into interactive 3D environments
• Superliminal: Change size of objects by working with perception
• Portal: Portals
• Scribblenauts: Summon objects by describing them in a notepad

I am not focused on the story, no. of hours of playtime, date of release or its popularity. It just needs to be playable and be enjoyable (and be available in PC).