My favorite games meld music, art, and gameplay to enhance one another, elevating the product to something beyond mere "consumption"; it's an experience. Not everyone will like them, but they do gain a passionate following. Sorry if anything I said sounded pretentious, I am trying to be sincere. I love music and art, I've dabble in both for over 20 years now, so I appreciate games that put love into their art assets, animations, character design, level design, music, sound design, storytelling, and voice acting, even if the gameplay is simplistic (as long as it's fun!). These games also tend to feel nice- the control has a certain snap to it, enhanced by the visual and audio cues. This list may be biased towards my adolescence and childhood favorites from the SNES and N64/PSX days, so bare with me: you will see a lot of retro favorites. If your favorite is not on the list, it's probably because i didn't play it as a child/adolescent, or as an adult, for that matter.

In a somewhat random order:
Chrono Trigger
Super Smash Bros Melee
World of Warcraft (Classic/Vanilla)
Legend of Zelda: Link to the Past
Conker's Bad Fur Day
Portal
Dragon's Dogma: Dark Arisen
Dark Souls
Demon's Souls
Bloodborne
MGS:Revengance
Banjo Kazooie
Katamari Damacy
Shadows of the Colossus
Doom
Commander Keen: Goodbye Galaxy
Super Mario World 2: Yoshi's Island
Painkiller
Super Meat Boy
Donkey Kong Country
Castlevania: Symphony of the Night
Human Fall Flat
World of Horror
Tony Hawk's Pro Skater 2
Super Mario Odyssey
Metal Slug 3
Earthbound
Tokyo Jungle (an odd one, for sure, but i love it so)