Cave Story is a dearly beloved game of mine, I never truly beat despite my love. I simply sucked too much at video games to ever actually get the best ending as a teenager, but after starting it up to see the Halloween sprites this year and realizing how much was resprited I accidentally started a new playthrough that ended up being one where I actually beat the full game.
One of my favorite games, and definitely one of the best indies out there, the fact that the original game in 2004 was the spawn of just one man in his free time is a true testament to what indies are.
If you wanna play it, play the freeware version or buy it used, also please buy Kero Blaster!!