Title: 4th Super Robot Wars
Content:  The game became a huge influence to future Super Robot Wars Games and also to some series that debuted in the game. The game itself marks the first appearance of Shin Getter Robo from the Getter Robo Go manga in any medium. The remake version also debuted the Mazinkaiser, an variant of the Mazinger Z created by Go Nagai before becoming its own series in 2001. The storyline of 4/F/F Final has also been used in the Original Generation games, with the most notable being in 2nd Super Robot Wars Original Generation.
Title: Yakuza 4
Content:  Yakuza 4 (龍が如く4 伝説を継ぐもの) is a video game developed and released by Sega for the PlayStation 3. The game was introduced on July 24, 2009. A promotional video was presented at the 2009 Tokyo Game Show, The sequel to Yakuza 3, it was released on March 18, 2010 in Japan after a playable demo was released on the Japanese PlayStation Store on March 5. Yakuza 4 was released in Europe and North America in March 2011. A sequel, Yakuza 5 was released in 2012. A remaster was released on the PlayStation 4 on January 17, 2019 in Japan, and worldwide on October 29, 2019 as part of The Yakuza Remastered Collection. Versions for Microsoft Windows and Xbox One were released in January 2021. Because Hiroki Narimiya retired from acting due to allegations of drug use, the role of Tanimura was recast with Toshiki Masuda taking over.
Title: 4th Super Robot Wars
Content:  4th Super Robot Wars (第4次スーパーロボット大戦) is a tactical RPG for the Super Famicom developed by both Banpresto and Winky Soft and published by Banpresto. It's the 5th entry in the classic Super Robot Wars series and the last entry in the Divine Crusaders Arc. It was first released on March 17, 1995, and received mostly positive reception, with reviewers highly praising the improvements from the last game while criticizing the game's increased difficulty. The game was ported to the Sony PlayStation and released on January 26, 1996, under the name 4th Super Robot Wars Scramble (第4次スーパーロボット大戦S). The game was partially remade and divided into two parts on under the name Super Robot Wars F (スーパーロボット大戦F) on September 27, 1997, for the Sega Saturn and on December 10, 1998, for the PlayStation. The sequel, Super Robot Wars F Final (スーパーロボット大戦F完結編) was released later on April 23, 1998, for the Sega Saturn and on April 15, 1999, for the PlayStation. The game also became available for the PlayStation Network on July 6, 2011 (4 Scramble) and November 19, 2011 (Both F and F Final).
Title: Yo-kai Watch 4
Content:  Level-5 announced in April 2018 that Yo-kai Watch 4 was under development for Nintendo Switch, with a planned Japanese release in 2018. Although the game was initially scheduled for release in winter 2018, the release date slipped to spring 2019 for quality issues before being released in Japan on June 20, 2019.
Title: Yu Yu Hakusho (season 4)
Content:  The fourth and final season of the Yu Yu Hakusho anime series, known as the Saga of the Three Kings, was directed Noriyuki Abe and produced by Fuji Television, Yomiko Advertising and Studio Pierrot. The episodes were released in North America by Funimation. It adapts Yoshihiro Togashi's Yu Yu Hakusho manga series by Yoshihiro Togashi from the seventeenth through nineteenth volumes over eighteen episodes. The episodes cover Yusuke Urameshi's journey to Makai to meet his demon ancestor, and his attempts to resolve the unstable political situation in Makai. The season initially ran from August 20 to December 17, 1994, on Fuji Television in Japan. The English episodes were shown from December 2005 to April 2006 on Cartoon Network's Toonami programming block. Three pieces of theme music 
Title: Samurai Warriors 4
Content:  The game was made to celebrate the tenth anniversary of the series. While the game was confirmed to be in development for the PlayStation 3 as early as 2012, it was not until the SCEJA Press Conference in September 2013 that the game was officially announced, with a version for PlayStation Vita in addition to PlayStation 3, and was released on March 20, 2014, in Japan. The first promo of Samurai Warriors 4 was revealed on December 7, 2013. The PlayStation 4 version port followed on September 4, 2014. It was also released in North America on October 21, 2014, and Europe on October 24, 2014. A revised version, Samurai Warriors 4-II (戦国無双4-II) was released on February 11, 2015, in Japan and was released in North America on September 29, 2015, and in Europe on October 2, 2015, but it does not contain the original stories from Samurai Warriors 4. A second expansion, Samurai Warriors 4: Empires (戦国無双4 Empires) was released in Japan on September 17, 2015, and in North America and Europe in 2016.
Title: Takuya Sugi
Content:  On August 20, 2006, Sugi made his first apparition in All Japan Pro Wrestling playing the character of Ahii, the result of a cooperation between Sanrio and AJPW. He was introduced by Keiji Mutoh, and revealed himself as a strange character wearing an orange and black full body suit that represented the Mexican Habanero chili pepper. He made his first in-ring work the same night, entering after the main event to save Mutoh, Masanobu Fuchi and Kaz Hayashi from an attack by the Voodoo Murders, and his official debut one day later, defeating VM member Voodoo Mask. Ahii remained as an ally to Mutoh and his babyface wrestlers against Voodoo Murders until November, when he got his own opponents in the form of Mastodon and Tow Van John, two personal enemies of his. Their 
Title: Super Robot Wars T
Content:  The game was released on both the PlayStation 4 and the Nintendo Switch in Japan and Asian territories on March 20, 2019. Pre-orders of both versions of the game included a special downloadable code for two special scenarios and a guest unit, the Gespenst. Also, similar to V and X, a Premium Anime Song & Sound Edition was released on the same date. On May 24, a new difficulty mode called "Super Expert Mode" was added to the game, which increased enemy unit customization levels even further and disallows retrying the stage when trying to achieve SR points. It also allowed further upgrades for the player's units and pilots, such as an additional Ace rank, new skill levels, an increased cap on pilot levels and stats, and an increased cap on unit upgrade ranks.
Title: Yakuza 4
Content:  Yakuza 4 has three new protagonists in addition to Kazuma Kiryu, the main character since the original Yakuza game: Masayoshi Tanimura (Hiroki Narimiya/Toshiki Masuda), Shun Akiyama (Kōichi Yamadera) and Taiga Saejima (Rikiya Koyama). Other new characters include Junji Sugiuchi (Kenichi Endō), a Tokyo Metropolitan Police Department detective; Hiroaki Arai (Ikki Sawamura), a Tojo Clan yakuza; Seishirō Munakata (Kinya Kitaoji), a high-ranking police officer and a woman, Lily (Maju Ozawa). Returning characters are Haruka Sawamura, Goro Majima, Makoto Date, Daigo Dojima and Goh Hamazaki.
Title: Samurai Warriors 4
Content:  Samurai Warriors 4, known in Japan as Sengoku Musou 4 (戦国無双4), is a hack and slash game by Koei Tecmo, and sequel to Samurai Warriors 3. Unlike past Samurai Warriors games, this one only has Japanese voice overs. A reboot of the series titled, Samurai Warriors 5, was announced at a Nintendo Direct on February 17, 2021.

Question: when did goku first go super saiyan 4?
Answer: Dragon Ball GT.