Dark Yugi and Nagumo ' s Monster Fighter game Dark Yugi and Nagumo ' s " Monster Fighter " game was a Shadow Game of " Monster Fighter " in the " Yu - Gi - Oh ! " manga between Dark Yugi and Koji Nagumo . Nagumo used the monster " Wild Spider " , while Dark Yugi used " Killer Emaada " , which he had borrowed from Jonouchi . Events . Prior events . Nagumo cheated in a game of " Monster Fighter " with Yugi , by punching him and stealing his equipment . Yugi then borrowed Jonouchi ' s fighter , " Killer Emaada " , switched to Dark Yugi and tracked Nagumo down . He found that Nagumo was selling a lot of " Monster Fighter " equipment that he had stolen and challenged him to a rematch . This time they played best out of three and Dark Yugi warned Nagumo that it would be a Shadow Game , which Nagumo interpreted as meaning there was no rules . The game . Round 1 . In the first round , the players battled for a while and Nagumo thought Dark Yugi was a fool for playing seriously . After a few more moves , Nagumo prepared to punch Dark Yugi , but lost concentration in the game as he raised his arm . Dark Yugi took the chance and got " Killer Emaada " to score a critical hit on " Wild Spider " , hitting it in the jaw and knocking it out of the arena , winning the round for Dark Yugi . Nagumo felt the force of the punch on his own jaw and was knocked back . Nagumo ' s face was cracked and he rolled on the floor in pain . Dark Yugi explained that the monsters won ' t be damaged in this game , as the players act as their scapegoats and if they don ' t play seriously , their bodies will be broken instead of their monsters . Round 2 . Nagumo called out all his moves as he executed them and Dark Yugi blocks . Nagumo yelled " left hook " , causing Dark Yugi to prepare " Killer Emaada " to block that attack . However " Wild Spider " barely moved its left arm and then launched an attack with its right arm . With not enough time to block right arm attack , Dark Yugi switched off the power on his fighter , causing " Killer Emaada " to flop forward , avoiding the punch . Dark Yugi promptly switched the power back on to continue the fight . Dark Yugi also attempted a feint attack . He announced a middle kick and initiated a high kick , while " Wild Spider " blocked to the middle . " Killer Emaada " , hit the weak point in " Killer Spider " , paralyzing it for two seconds . Dark Yugi tried to execute the finishing move for " Killer Emaada " , but Nagumo stopped him by kicking Dark Yugi in the side . When " Wild Spider " unfroze Nagumo got it to crouch and duck under " Killer Emaada " . " Wild Spider " raised its head , tossing " Killer Emaada " into the air . " Wild Spider " used its open air combo , " Spider Death Trap " , where it launches an array of punches at " Killer Emaada " . Due to the nature of the Shadow Game , Yugi felt the pain his monster would be taking . " Killer Emaada " was knocked out of the arena , causing Nagumo to win this round . Round 3 . Angered by Nagumo ' s foul play , Dark Yugi changed the level of the Shadow Game from 1 to 3 . Dark Yugi blocked most of Nagumo ' s attacks . He eventually makes some attacks and knocked " Wild Spider " off balance . Again he hits its weak point , causing it to freeze for two seconds . Nagumo tried to kick Dark Yugi again . However he was unable to move his leg , as " Wild Spider " , along with the other monsters he stole , were on the ground holding his leg back . Nagumo wondered how " Wild Spider " could be down there when it was meant to be in the arena . Dark Yugi explained that Nagumo ' s monsters refused to take part in his evil , leaving him fighting alone and having betrayed their trust the only monster left on Nagumo ' s side was himself . The " Wild Spider " on the field was changed to have Nagumo ' s face . The monster represented Nagumo ' s inner - self , which was twisted into a shape to match his sick desires . Yugi used the finishing move for " Killer Emaada " , " Space Cannon " , causing it to punch straight through Nagumo ' s monster . Aftermath . Dark Yugi thought " A person can change their soul into any kind of monster , but in the end the shadows always eat them alive . " and left Nagumo lying on the floor , with most of his body covered in shadows .