I have a PS 1 emulator on my Ubuntu laptop. Let me see if there is a site to download Xenogears (legal if you delete in a day)
Pack a lunch. It is gonna tale a LOT more than a day ;)
It is at least a 40 hour game if you speed run it knowing where to go and what to do when you start ;)
Word of warning. It is not the typical RPG/Video game. It is unique unto itself. but I promise it’s worth it.
Also check the Phantasy Star games for the Sega Master system and Genesis. Older still but great fun.