In the residential area, backpack slots start with 4 squares at level one. At level two, it's 8 squares, and at level three, it's 12 squares.
However, in the competitive zone, the initial level one backpack has only 2 squares, level two has 4 squares, and level three has 6 squares.
And the points needed to upgrade are also frighteningly high; the first upgrade costs 100,000 points, the second costs 1 million, and if you want to upgrade further, you need 10 million points!
That's why so far, the team members have only upgraded their backpacks twice. 10 million is too costly, they need to use points more on improving their weapons and equipment.
Although backpacks are not a necessity, Bai Youwei's 12-slot backpack has indeed provided them with great convenience. Five large cans of gasoline were quickly stuffed into the backpack, and Yuri decided to collect five more!
