If you're the sort of person who is into this, then that's probably big news for you.
Anyway, Insomniac's Spider-Man: Miles Morales is going to require at least 50GB of space to download, according to the PlayStation website, with the Ultimate Launch Edition of the same game - which comes with a remaster of Spider-Man for the PS4 - more than double that at 105GB.
Demon's Souls is going to take up at least 66GB of space, and they've not announced how much will be needed for titles such as Destruction Allstars or Sackboy: A Big Adventure.
Got all that? Good.
In case you're worried about running out of space to store games, you don't have to be that concerned, because the PS5 features an 825GB solid state drive full of memory, so - to put that into context - the largest game we've just talked about takes up at 13 percent of the total memory.
Not bad at all, is it?
Obviously, you can also buy extra external space, but that's going to cost you a significant amount to get one that's compatible with the PS5.
In March, Digital Foundry writer Richard Leadbetter explained: "Expandable storage is possible and you won't need proprietary drives from Sony to get the extra space you want.
"However, in the short term at least, the advice is simple: don't buy an NVMe drive without Sony validation if you plan to use it in PS5. Also remember that extreme bandwidth PCIe 4.0 NVMe drives are likely to be very expensive - in the short term, at least.
"This is cutting-edge technology, after all. Obviously though, the outlook should improve significantly as the next generation progresses - and prices do tend to drop significantly over time."
So there you go, just wait for a bit and the technology will become cheaper. Hey, you've still got that 825GB to play with, anyway.
Incidentally, this is one area that the Xbox Series X comes out on top of their Sony counterparts.
The Series X will feature a 1TB SSD for internal storage, whereas it's little brother the Series S will only have 512GB.
Either way, you can just delete games once you've finished them off, surely? At least they don't have anything like the install sizes we've seen on games such as Call of Duty: Modern Warfare or the like.