Megasoft

Megasoft is a Japanese videogame developer. The company was founded by Takeshi Tozu in July of 1985 as Whiteboard Co, Ltd, before being renamed to Santos in 1989. In December of 1991, facing bankruptcy, Santos was bought out by SEGA and reincorporated as Megasoft, becoming a first-party development studio of the (at the time) console maker.

As Whiteboard, the company initially focused largely on developing mahjong games, the bulk of which were published by SEGA, who also manufactured their cartridges. Later, the studio began to branch out and started developing a variety of other games, such as Ninja Princess for the SG-1000 and Battle Golfer Yui for the Mega Drive. After the SEGA buyout, the newly rechristened Megasoft worked on several SEGA titles, most notably Shinobi III: Return of the Ninja Master. From the end of 1992 onwards, Megasoft began to be tightly integrated into SEGA's internal development studios, but the company continued to exist in some form as late as 1996.

Takeshi Tozu left Santos almost immediately after its acquisition and established a second company called Santos. This company was eventually bought out by Yumekobo, which was itself folded into SNK in March of 2000. Another faction of Santos staff founded Gai Brain, which has not been heard of since 1998 and is likely defunct.

SG-1000

 * Ninja Princess (1986)
 * Wonder Boy (1986)

SEGA System 2

 * Dakkochan House (1987)

Master System

 * Great Baseball (1987)
 * Wonder Boy (1987)
 * The Pro Yakyuu: Pennant Race (1987)
 * Great Golf (1987)
 * Fantasy Zone: The Maze (1987)
 * Alex Kidd: The Lost Stars (1988)
 * Megumi Rescue (1988)
 * Nekkyuu Koushien (1988)
 * American Baseball (1989)
 * American Pro Football (1989)
 * World Games (1990)
 * Dynamite Dux (1990)
 * Danan: The Jungle Fair (1991)

Mega Drive

 * Mahjong Cop Ryuu: Hakurou no Yabou (1989)
 * Battle Golfer Yui (1991)
 * Toki: Going Ape Spit (1992)
 * Shinobi III: Return of the Ninja Master (1993)
 * Aa Harimanada (1993)

Game Gear

 * Wonder Boy (1990)
 * The Pro Yakyuu '91 (1991)
 * Doraemon Nora no Suke no Yabou (1993)
 * Aa Harimanada (1993)