ADK

ADK Corporation (株式会社エーディーケイ) was established in July 1980 as Alpha Denshi Co., Ltd. (アルファ電子株式会社). It changed names in 1992. Kazuo Arai (新井一夫) was the president. As of 2001, Kazuo Arai, SNK, Mitsui & Co., and CSK Electronics were stockholders. Miraisoft (有限会社未来ソフト) and Alphasoft (アルファソフト株式会社) were affiliate companies [1] (located in the same building).

ADK eventually went bankrupt, and the business was transferred to a company called Phonecast. [2]

The Neo Geo hardware was designed by ADK [3]'s Eiji Fukatsu [4] [5], an improvement on the 68000-based hardware used for games like Time Soldiers. [6]

Research Methods: Actual mentions, hidden data, online resources, shared staff

Arcade

• Battle Field / Time Soldiers
• Bull Fighter
• Champion Baseball
• Champion Baseball Part-2
• Champion Croquet (unreleased) [7]
• Crush Roller / Make Trax

Originally designed by another company in Ikebukuro [8]

• Dora-chan
• Equites
• Exciting Soccer
• Exciting Soccer II
• Gang Wars
• Gekisou
• Gold Medalist
• High Voltage
• Janputer
• Jongbou II
• Jump Bug

Staff: Kawamura (planner, Hoei; formerly of Data East); Eiji Fukatsu (programmer, Alpha Denshi)

• The Koukou Yakyuu
• Korosuke Roller
• Kyros no Yakata / Kyros

Some Graphics: Pop House

• Mahjong Block Jongbou
• Meijinsen
• Perfect Janputer
• Shogi
• Shogi Part II
• Sky Adventure
• Sky Soldiers
• Splendor Blast
• Super Champion Baseball
• Super Stingray
• Talbot

Famicom/NES

• Famicom Meijinsen (JP Publisher: SNK)
• Satomi Hakkenden‎ (JP Publisher: SNK)
• STED: Iseki Wakusei no Yabou (JP Publisher: KAC)

Hyper Neo Geo 64

• Beast Busters: Second Nightmare

Mark III/Master System

• Time Soldiers (US/EU Publisher: Sega; BR Publisher: Tec Toy)

MSX

• MSX Shogi (JP Publisher: Sony)

Neo Geo

• Crossed Swords
• Fun Fun Bros (unreleased) [9]
• Magician Lord
• Mystic Wand (unreleased) [10]
• Ninja Combat
• Ninja Commando
• Ninja Master's Haou Ninpou-chou / Ninja Master's
• Over Top
• Raguy / Blue's Journey
• Shogi no Tatsujin
• Sun Shine / Block Paradise (unreleased) [11]
• Thrash Rally / Rally Chase
• Tsuukai GanGan Koushinkyoku / Aggressors of Dark Kombat
• Twinkle Star Sprites
• World Heroes
• World Heroes 2
• World Heroes 2 Jet
• World Heroes Perfect

Neo Geo CD (exclusive titles)

• ADK World
• Crossed Swords II
• Oshidashi Zintrick

Neo Geo Pocket

• Battle Royal (unreleased) [12]
• Crush Roller
• Dokodemo Mahjong
• Dokodemo Mahjong Color
• Dynamite Slugger
• Hyper Gals Mahjong (unreleased)
• The Koukou Yakyuu (unreleased)
• Magician Lord (unreleased) [13]
• The Major League (unreleased)
• Melon-chan no Seichou Nikki
• Melon-chan no Seichou Nikki 2 (unreleased)
• Neo Poke Bass Fishing (unreleased)
• Neo Poke Pro Yakyuu
• Party Mail
• Shogi no Tatsujin
• Shogi no Tatsujin Color
• Sotsugyou Shashin (unreleased)
• Taisen Billiard: Break Shot (unreleased)
• Tsuushin Yonin Uchi Dokodemo Mahjong (unreleased)
• World Heroes Pocket (unreleased)

Other

• COM-848 [coin counting machine]
• Dungeon Quest series [LCD roguelike games] (Konami)
• Kore ii netto [print seal machine] (ASCII)
• Nazo no Seibutsu Nanja Monja [virtual pet] (Forte)
• Pocket Caddy [pedometer]
• Pocket Esthe [pedometer]
• Pocket Walk: Toukaidou-ban [pedometer]

Saturn

• Twinkle Star Sprites (JP Publisher: ADK)
• World Heroes Perfect (JP Publisher: SNK)

Links

• Official website (Internet Archive Wayback Machine) (Japanese) [14] [15]
• Former Alpha Denshi programmer Masashi Yamaguchi (山口正) talks about his game career (Internet Archive Wayback Machine) (Japanese)
• Former ADK employee (Japanese)