I had an old 1TB lying around. It's fantastic not to have to worry about storage. I still have well over 800GB left on there.

Lol, disk capacity. #digitalmasterrace

It's obvious the Wii U can play dual layer games. You can play Brawl (dual layer) and Xenoblade Chronicles (dual layer) so I highly doubt the console is unable. They may not have any produced (due to the lack of needing it), and I doubt they ever will. But I'm pretty positive they could make them if they needed to.

Star Ocean has 3 discs

God I love that game

It's not obvious, otherwise Monolith Soft wouldn't be saying they almost couldn't fit Xenoblade Chronicles X onto one disc. Check every source and it'll tell you that Wii U optical discs hold up to 25GB. Wii did dual layer, but there's no source saying that its successor can. If Nintendo could they would've already produced it but they haven't. If they had the ability why would they keep it away from one of their own most prolific devs?

But don't lasers either read dual layers or not? I figure we'll find out some time before the end of the gen, but Monolith Soft saying they almost couldn't make it fit on one disc may just be refering to the usual single layer disk, where Nintendo said, "well, use a dual layer disc" (it did say Nintendo helped resolve the issue). Or maybe there just wasn't any Nintendo proprietary dual laser discs, so the way to make it fit is to create one. Doesn't seem like it would be that difficult a task. 

I don't know, there is a lot of grey area is all I'm saying, and it's aweful weird how it can read a dual layer Wii disc but is "unable" to read dual disks for it's own games. 

Great to have a great big world, as long as there is a load of cool stuff to do in them. Bigger doesn't mean better.

I don't expect this game to disappoint in that regard though.

very good!

25 GB is enough for Disc capacity, but online download will be bigger, you guys need to remember in disc everything is compressed. So it doesn't matter if its 50 GB online download they can fit 25 GB on BD ROMS with compression. And don't forget, large world or humongous world doesn't mean bigger data base file and asset, the developer can use the one texture file or asset on multiple purpose.

50gb isn't all that bad for this generation. Pretty common really.