Please consider WanderSong. It's a small game and was made with so much love. Games can have a huge variety of plots and environments. But the vast majority of games, regardless of what they are about, are actually about victory. You're a space dwarf mining for minerals, but the game is all about mastery and winning. You're a dragon-kin with magic shouts, but every quest is about achieving a victory over a challenge. And so on.

I would say that WanderSong is not a game about victory. It's a game about happiness. The character, the mechanics, the plot, the environments; they all serve first to explore the meaning of happiness. There's nothing else quite like it. You can find it here.