终极格斗冠军赛
终极格斗冠军赛（英语：Ultimate Fighting Championship，缩写：UFC）是美国的一项混合武術格鬥赛事，起源于1993年。该赛事以异种无差别实战为卖点，比赛的规则限制非常低。比赛场地为八角笼，设有裁判一名，每局5分鐘，共3局（冠军赛5局），倘若3局後不分勝負，則以三位场下裁判（判分员）決定輸贏。同樣一方认输、失去意识或裁判中止比赛为结束。 赛事初期有很多各个国家各个流派的格斗高手参加，留下了很多经典比赛，比如使巴西柔术声名鹊起的格雷西家族的一系列胜利，以及一些在其他赛事中不可能出现的比赛双方体格差异悬殊的比赛。早期的UFC因為過於暴力，曾經被美國參議員约翰·麦凯恩宣布為“人類鬥雞”，並大力推動禁止此項運動，但事後被人揭露他曾收受拳擊運營商的競選資金。到20世纪末，由于过于暴力导致的舆论压力，以及经营不善引发的经济压力，此项赛事一度陷入低谷，被日本的PRIDE和K-1赛事的锋芒压过。但是近期由于转变经营方向，逐渐有所起色，再次走上混合武術格鬥赛事的一线舞台。
火影忍者疾風傳 終極風暴4
Matsuyama wanted to add material from the New Generation Project, which was begun by the series when the manga ended its serialization in 2014. The team listened to suggestions by fans, based on the previous games, to make the battle system easier to work. A mechanic brought from previous games are the walls, where the player can lose a fight by falling from the ring; early in "Ultimate Ninja Storm 4" development, the staff debated implementing them in boss fights. When he saw the finished product, Matsuyama was moved by the final fight between Naruto and Sasuke. He sketched the two fighters, intending to put it on the game and promising gamers that they would enjoy the fight.