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.
I was just watching the opening animation, wow. Looks like a really good story line there.
BTW, this game works on my Ubuntu Linux laptop with the PCSX emulator.