Sega CS1

Sega Consumer Research and Development 1 or Sega CS1 is a video game research and development division within Sega. Sega is thought to have consumer divisions every since they began developing for non-arcade systems, however it unknown which games were attached to CS1 during the SG-1000, Sega Master System and Mega Drive eras.

CS1 had two separate sub-divisions known as Team Aquila, which focused on sports related games such as ', and Team Andromeda, which produced the ' series of games -- both of which gained the CS1 a wide amount of notoriety as being two of the best displays of the Sega Saturn's capabilities during it's heyday. In 1995, Sega also established an internal PC division, dedicated to porting PC titles. In 1999, CS1 merged PC division and renamed Sega Software R&D Dept. #6. In 2000, the division was spun off as Smilebit.

Integrating back into Sega in 2004, the division changed heavily, with Smilebit's non-sports team merging with Amusement Vision's, and the Amusement Vision staff completely loosing it's arcade focus -- therefore technically making the current CS1 a combination of the two divisons. For a brief period, the Yakuza development team were known as the New Entertainment R&D Department; however, the name changed back to CS1 in 2008. In 2011, the Yakuza team got re-branded as Ryu ga Gotoku Studio.

Softography

Sega Saturn

• Greatest Nine (1995)
• Greatest Nine 96 (1996)
• J.League Pro Soccer Club o Tsukurou! (1996)
• J.League Pro Soccer Club o Tsukurou! 2 (1997)
• Panzer Dragoon (1995)
• Panzer Dragoon Zwei (1996)
• Panzer Dragoon Saga (1998)
• Pro Yakyuu Greatest Nine 97 (1997)
• Pro Yakyuu Greatest Nine 98 (1998)
• Sega International Victory Goal (1995)
• Sega Worldwide Soccer 97 (1997)
• Sega Worldwide Soccer 98 (1998)

Dreamcast

• Pro Yakyuu Team o Tsukurou! (1999)
• Pro Yakyuu Team de Asobou! (1999)

PlayStation 2

• Derby Ba wo Tsukurou! 5 (2005)
• J.League Pro Soccer Club o Tsukurou! 5 (2007)
• Pro Soccer Club o Tsukurou! Europe Championship (2006)
• Pro Yakyuu Team o Tsukurou! 3 (2005)
• Super Monkey Ball Deluxe (2005)
• Virtua Pro Football (2006)
• Yakuza (2005)
• Yakuza 2 (2006)

Xbox

• Spikeout: Battle Street (2005)
• Super Monkey Ball Deluxe (2005)

Nintendo DS

• Mario & Sonic at the Olympic Games (2007)
• Mario & Sonic at the Olympic Winter Games (2009)
• Super Monkey Ball: Touch & Roll (2005)
• Pro Yakyuu Team o Tsukurou! (2008)
• Pro Yakyuu Team o Tsukurou! 2 (2009)
• Soccer Tsuku DS: Touch and Direct (2008)
• Soccer Tsuku DS: World Challenge 2010 (2010)
• Zombie Shiki - Eigo Ryoku Sosei Jutsu: English of the Dead (2008)

PlayStation Portable

• J.League Pro Soccer Club o Tsukurou! 6: Pride of J (2009)
• J.League Pro Soccer Club o Tsukurou! 7: Euro Plus (2011)
• J.League Pro Soccer Club o Tsukurou! 8 Euro Plus (2013)
• Kurohyou: Ryu ga Gotoku Shinshou (2010)
• Kurohyou 2: Ryu ga Gotoku Ashura Hen (2012)

Xbox 360

• Binary Domain (2012)

Wii

• Mario & Sonic at the London 2012 Olympic Games (2011)
• Mario & Sonic at the Olympic Games (2007)
• Mario & Sonic at the Olympic Winter Games (2009)
• Super Monkey Ball Banana Blitz (2006)
• Super Monkey Ball: Step & Roll (2009)

PlayStation 3

• Binary Domain (2012)
• Ryu ga Gotoku 0: Chikai no Basho (2015)
• Ryu ga Gotoku: Ishin! (2014)
• Ryu ga Gotoku Kenzan! (2008)
• Ryu ga Gotoku 1&2 HD Edition (2012)
• Soccer Tsuku: Pro Soccer Club o Tsukurou! (2013)
• Yakuza 3 (2009)
• Yakuza 4 (2010)
• Yakuza 5 (2012)
• Yakuza: Dead Souls (2011)

Nintendo 3DS

• Super Monkey Ball 3D (2011)

PlayStation Vita

• Soccer Tsuku: Pro Soccer Club o Tsukurou! (2013)
• Super Monkey Ball: Banana Splitz (2012)

Wii U

• Mario & Sonic at the Sochi 2014 Olympic Winter Games (2013)
• Mario & Sonic at the Rio 2016 Olympic Games (2015)
• Ryu ga Gotoku 1&2 HD Edition (2013)

PlayStation 4

• Ryu ga Gotoku: Ishin! (2014)
• Ryu ga Gotoku Kiwami (2016)
• Ryu ga Gotoku 0 (2015)
• Ryu ga Gotoku 6 (2016)

PC

• Panzer Dragoon (1996)
• Pro Soccer Club o Tsukurou! Online (2007)
• Pro Soccer Club o Tsukurou! Online 2 (2008)
• Pro Yakyuu Team o Tsukurou! Online (2007)
• Pro Yakyuu Team o Tsukurou! Online 2 (2008)
• Sega Worldwide Soccer PC (1997)
• The Typing of the Dead 2 (2008)

iOS

• Kingdom Conquest (2010)

Magazine articles

Main article: Sega CS1/Magazine articles.