Hatoful Boyfriend.
Even though I gush about it and love it so much I've constantly heard "WHAT IS THE APPEAAAAAAAAL" from so many people.
I just think it's something you have to play to truly understand, man. It's amazing. I went in expecting this goofy, stupid joke of a dating sim game because lol pigeons and became totally emotionally invested. The characters are quirky and fun and the big story portion of the game is so crazy, bizarre, and amusing that you can't help but be amazed by it.
Also, Anghel is my birdie husbando. Pls no steal. Hohohoho.