A single Quad layer Bluray could fit the entire game, but not a ton of PC users have an optical drive, much less a Bluray capable one. A microSD card or USB drive might be more viable these days. A 128GB costs less than $10.
When you want to stick to DVDs you would need either 27 (DVD-5), 15 (DVD-9) or 8 (DVD-18). Multi-DVD releases are definitely a thing. Star Wars Battlefront comes on 4 discs. I suspect they would opt for a DVD-9 release as this allows you to print artwork on one of the sites and you likely need a few extra discs as you cannot use all of the storage for data. So we talk about a 16-18 disc release. ~22mm (7/8 inch) of DVD goodness.
then put in X Disks.
we did that with (floppy) disks forever, and CDs too.
I don’t remember any DVDs using that, but they surely existed
A single Quad layer Bluray could fit the entire game, but not a ton of PC users have an optical drive, much less a Bluray capable one. A microSD card or USB drive might be more viable these days. A 128GB costs less than $10. When you want to stick to DVDs you would need either 27 (DVD-5), 15 (DVD-9) or 8 (DVD-18). Multi-DVD releases are definitely a thing. Star Wars Battlefront comes on 4 discs. I suspect they would opt for a DVD-9 release as this allows you to print artwork on one of the sites and you likely need a few extra discs as you cannot use all of the storage for data. So we talk about a 16-18 disc release. ~22mm (7/8 inch) of DVD goodness.
Star ocean the last hope on the 360 had 3 disks
Recently red dead 2 had a game disc and a play disc.