NanoBreaker (ナノブレイカー NanoBureikā?) is an action video game developed and published by Konami for the PlayStation 2. It was released in Japan on January 27, 2005, in North America on February 15, 2005, and in PAL regions on February 18, 2005. Koji Igarashi, famous for his work on the Castlevania series, was the producer of the game. NanoBreaker uses a modified version of the Castlevania: Lament of Innocence engine.
The player controls Jake, the protagonist of the game, and explores a large island stage. The game takes place in 2021, in which the United States has established an island facility called Nanomachine Island to research and develop nanotechnology for implementation in military and civilian life. To reach this goal, the United States collected the world's foremost scientists, analysts and businessmen and then formed a secluded community out of them. Through 20 years of technological gain, this world is the result. As Jake, the player's goal is to assist the daughter of a brilliant scientist in her quest to restore order to the island and its people by destroying the main computer which manages the activities of the nanomachines.
As Jake, a cyborg militant, the player will wield a plasma blade that has the ability to transform into numerous weapons (axe, broadsword, hammer, etc.), which are generated by the blade during combo attacks. The plasma blade also has the ability to grapple enemies from afar with a blue energy cord. Jake's body is metallic and features wings that can come out of his shoulderblades and allow him to glide. The wings also serve as a sort of "limiter release" for more powerful combos and finishing moves. Within the game world, the player will be facing the mutated inhabitants of the island which are referred to as "Orgamechs". There are many different types of orgamechs including humanoid, bug and dog types. The points system is a counter which racks up the amount of blood spilled after killing an orgamech. After the counter reaches certain amounts of blood Jake will receive extra health and energy as well as increases in the maximum amount of health and energy Jake has at his disposal.
- Jaguar from Neo Contra and Contra ReBirth appears as a hidden character. He can be unlocked once the player finishes the game with Jake and then with Keith.