Just some chill serotonin games or stuff that just makes the world feel better. Many of these are building/farming games because that's what people generally use for that.
Its also horny, but like in a fun way instead of creepy.
Florence
A Hat in Time
Stardew Valley
Dragon Quest Builders
The Witness
Slime Rancher
Dr. Langeskov, The Tiger, and The Terribly Cursed Emerald: A Whirlwind Heist
Mini Metro
Quiplash
Include all Jackbox games tbh
80 Days
Broken Age
Gravity Rush
Minecraft
Costume Quest
Ghost Trick: Phantom Detective
Much more serious than the other entries here. But it carries a fervent belief in fighting for a better future for your loved ones that I can't help but keep it on here.
Rune Factory 2: A Fantasy Harvest Moon
My girlfriend said it was the the one to start with
Professor Layton and the Curious Village
Please assume this counts for the entire Professor Layton series
Elite Beat Agents
Chibi-Robo!
Paper Mario: The Thousand-Year Door
Katamari Damacy
Chulip
I hesitated to put this on good vibe serotonin because of just how frustrating the gameplay and mechanics and forward momentum can be, but its so darn charming it kinda beats that out.