|Headquarters||San Francisco, California, USA|
|Other Names||Visual Concepts|
Unexpected Development was a San Francisco development company owned by Cary Hammer, formerly employee of Scholastic Interactive that ran for only seven years, and its main focus was doing handheld games. It was originally a handheld division of Visual Concepts, and one of the first games they worked on were Star Trek: 25th Anniversary Edition (GB) and Spot: The Cool Adventure (GB), before it was incorporated in 1992 as Unexpected Development, with the first title being Spider-Man and the X-Men in Arcade's Revenge (GB).
Cary Hammer programmed the driver, in which they converted MIDI files, and used a DMG processor chip to do this driver. John Loose is the only person who composed music for Unexpected's Game Boy driver. The driver was licensed to Borta for Urban Strike (GB) and Visual Concepts for McDonaldland (GB) and Spot: The Cool Adventure (GB).
Cary Hammer also programmed Game Gear's Unexpected driver, in which composer John Loose sent MIDI files in order to carry a Z80 processor chip to make this driver. John Loose is also the only person who composed music for this driver. The driver was licensed to developer Borta for Urban Strike (GG).