Cause of Death: Persistence on the part of the player, and a lot of it. Why It's So Satisfying: One of the classic gaming debates revolves around who the hardest boss is in Final Fantasy VII: is it superboss Emerald Weapon, or superboss Ruby Weapon? Both are optional fights during the game, and though Emerald has a whole 200,000HP more than Ruby, Ruby has an extremely high level of defense, requiring players to go into the fight with a clear strategy to fend off its enormously damaging wave of attacks. Killing Sephiroth might be gratifying revenge for the murder of Aeris earlier in the game, but he's small potatoes compared to these superbosses, Ruby especially. After hours of trying different Materia combinations and battle plans, taking the beast down is among the most satisfying experiences gaming has to offer.