Every time the player dies, regardless of whether they already have a copy or not, they'll be given a new Biomepedia book upon respawning. There's also already a button to view the Biomepedia in the inventory screen regardless of having the book, so this probably isn't necessary or intentional.
Every time the player dies, regardless of whether they already have a copy or not, they'll be given a new Biomepedia book upon respawning. There's also already a button to view the Biomepedia in the inventory screen regardless of having the book, so this probably isn't necessary or intentional.