Star Ocean The Second Story. There are 86 different endings and hundreds of sound bytes to unlock, and depending on who you pick to join your party/team the game locks the other choice until the next play through (there are like 5 pairs where you can only select one, and some are tethered together). This was also a 2 disk PS1 era JRPG so each play through was around 30 hours if you didn’t explore everything including special events and relationship paths between Each character (which also is required to unlock certain sound bytes) and every town/city. Let’s not get started on the crafting system. Modern games don’t have shit on that behemoth as far completionist itch goes lol.