Boss battles are an integral part of being a gamer. Whether you found out the princess was in another castle, or helplessly watched Psycho Mantis read your memory card akin to reading your very soul boss battles are part of what make games special. They allow you to finally get your chance to stop that evil villain you've hated the entire game. At last, you'll have your revenge. But sometimes, a game will very clearly take away your shining moment. Either through killing the villain off in a cutscene, or simply not giving you the option to go toe to toe with them. It can be a cruel, seemingly heartless twist of fate for any player. Sometimes, it works in the favor of the game, granting the boss an aura that he or she may never get by actually fighting you. After all, they could be so embarassingly easy, that you wonder why they were painted as such a bad ass. Alternatively, removing the chance to smack the smug look off their face can be an awkward choice for a game. It can colour the player's opinion of the game they played before, often in a negative way. By refusing to give the player a sense of closure, you can potentially spoil the fond memories they've already had of the game thus far. Tread lightly, developers. Tread lightly, indeed. Here are 10 boss battles that were simply not to be.