https://www.cavestory.org/game-info/beta.php almost all content is mirrored here
https://www.youtube.com/watch?v=yZJWCATxP-Q
https://cdn.discordapp.com/attachments/419832271294693397/709562718784454676/16245409.54771_smile_edit.mp4
https://cdn.discordapp.com/attachments/419832271294693397/709563043088171048/16245409.54771_smile_edit2.mp4