Mind Crush ( Penalty Game ) Mind Crush , known as Collapse of the Heart - MIND CRUSH ( — — の , " Maindo Kurasshu - Kokoro no Hōkai " ) in the Japanese version , was a Penalty Game that Dark Yugi inflicted on Seto Kaiba in the manga at the end of Death - T . It was used to metaphorically shatter Kaiba ' s heart , destroying the evil that corrupted it and leaving him to reassemble the broken heart as a puzzle . Physically Kaiba remained in a coma until he was ready to reawaken . In the " Yu - Gi - Oh ! " anime , the term " Mind Crush " has been used for all of Yami Yugi ' s ( Dark Yugi ' s ) Penalty Games , where it has the effect of exorcising an evil spirit or rendering the victim unconscious . In the " Yu - Gi - Oh ! ZEXAL " manga , Kyoji Yagumo also inflicts a Penalty Game called Mind Crush on Eviluder , causing a spider to appear on his heart . The card " Mind Crush " is based on the original version of this Penalty Game . Original Mind Crush . Seto Kaiba forced Yugi Mutou to participate in Death - T , a theme park designed to kill him . Dark Yugi defeated Kaiba in a game of " Duel Monsters " in the final stage and inflicted the Mind Crush Penalty Game on him as punishment for his crimes , having presumably realized that the last Penalty Game he had inflicted on Kaiba had not worked . The part of Kaiba ' s soul that was filled with evil was destroyed and Kaiba was left motionless in his chair , slipping into a coma as a result . Dark Yugi stated to Mokuba that Kaiba was now reassembling the broken puzzle of his heart , one piece at a time and with his own strength so that he would not make any mistakes . He told Mokuba Kaiba that Kaiba would return one day when he completed the puzzle . Mokuba , who had compared Kaiba ' s change in personality over the last few years to him being possessed by a gaming demon , was glad that Kaiba ' s evil part had been dispelled and promised to wait forever for him to wake up . Kaiba spent the next few months in hospital and was sometimes visited by Yugi . The world ' s best doctors looked at him and thought that he would spend the rest of his life in the coma . He was later put under 24 hour care in Kaiba Manor . Over time , Mokuba came to resent Dark Yugi for doing this to him . Kaiba ' s absence also gave Maximillion J . Pegasus , an opportunity to takeover KaibaCorp . The Ventriloquist of the Dead used a Kaiba puppet , which he claimed to house the soul of the real Kaiba and was seeking revenge on Dark Yugi . During Dark Yugi and the ventriloquist ' s Duel , the ventriloquist got the puppet to play Kaiba ' s cards , including " Blue - Eyes White Dragon " . However the real Kaiba woke up from his coma during this Duel , causing the " Blue - Eyes White Dragon " to self - destruct and the ventriloquist to abandon his use of the puppet . Despite his revival , Kaiba maintained his cruel personality . However when he was saved from Pegasus by the Yugis , an apparition of his younger self appeared and led him to Mokuba . When the two of them were reunited , the apparition of Kaiba inserted the final piece into the puzzle of his heart . In the anime , the Mind Crush is not so drastic ; Yami Yugi simply " opened his mind " by destroying the dark half of Kaiba . Though Kaiba maintained his usual gruff and seemingly cruel demeanor , he had a good heart and often covered it up by snapping at others and making snarky remarks . Other versions . In the " Yu - Gi - Oh ! ZEXAL " manga , Kyoji Yagumo applies a Penalty Game on Eviluder after he loses his Duel against Yuma , and calls it " Mind Crush " . He somehow introduced a spider in Eviluder ' s heart previously , and then makes it attack his heart , which quickly causes him to collapse after feeling enormous pain .