While downloading tomb raider for my ps4 it said (in the notifications tab) it was only 5gb in size but when browsing in the store or managing storage it shows the game takes 20gb of space.
Assassins creed 4 is now the best imo, with terraria taking fifth (with red faction 2nd, tombraider 3rd and dark souls 4th) I didn't download dishonored or saints row 3rd for some reason sadly.