I'm amazed no one even took a guess here. Gonna catch up a bit, so, more hints.
#32 - The only mainline game in this space-based series where you actually explore multiple planets.
Hint 2 - It was the first game in the series to feature voice acting, though it's nowhere near as infamous for it as the next one that did.
#31 - You play as a blue dude with a terminal heart disease, and have several visions of a certain black dog over the course of the game.
Hint 2 - It's an indie game that took heavy inspiration from A Link to the Past and Diablo.
#30 - A short game that was made using the engine of a game famous for having never gotten a "3".
#29 - The opening stage features some of the most infamous voice acting ever put in a videogame.