Hitmaker Co., Ltd. was a development subsidiary of Sega created with members from an in-house department titled Amusement Machine 3 Research & Development(AM3 R&D) and it later absorbed another subsidiary, Sega Rossa, before being shutdown and reorganized back into an internal Sega R&D structure after Sega’s merger with Sammy.

 
The Key of Avalon Ver.1.20 – Summon the New Monsters

 
The Key of Avalon 2 – Eutaxy Commandment

 
The Key of Avalon – The Wizard Master

 
Amazing Island

 
6.0
Confidential Mission

 
5.0
Crazy Taxi: Fare Wars

 
5.2
Crazy Taxi 2

 
4.9
Last Rebellion