The worst Borderlands game on account of being the least interesting and most annoying one (an incredible feat). The game isn't terrible, but I just didn't care about it the entire time I played through the story. Worst cast of selectable characters, worst setting, worst gameplay, with me giving particular note to the oxygen mechanic, one of the most tedious and sluggish things I've had to endure in a game. It's still a Borderlands game, so it's gonna be dumb mindless fun at some base level, but it's clear that the series was starting to age poorly by this entry, and 3 did not get much better. Just very disappointed, mostly.