Mega Drive - Game Genie (PAL) cart
Mega Drive - Game Genie (PAL) cart
Used cheat cartridge for the Sega Mega Drive game console.
This cartridge allows you to enter codes in order to modify all kinds of game settings: number of lives, invulnerability, skipping levels, etc. Codebook not included, but codes can be found easily on the internet.
Cartridge language is English.
Cartridge only. Tested, works. In good condition. Label has some damage. Please refer to pictures for details of condition and contents.
Genre: cheat device
Product code J204
Game Genie is the name of a line of video game cheat cartridges originally designed by Codemasters and sold by Camerica and Galoob. The first device in the series was released in 1990 for the Nintendo Entertainment System, with subsequent devices released for the Super NES, Game Boy, Genesis, and Game Gear. All the devices temporarily modify game data, allowing the player to cheat, manipulate various aspects of games, and sometimes access unused assets and functions. Five million units of the original Game Genie products were sold worldwide, and most video game console emulators feature Game Genie code support. Emulators that have Game Genie support also allow a near-unlimited number of codes to be entered whereas the actual products have a much smaller limit, between three and six codes.
In mid-1993 Codemasters began development on a "Game Genie 2", with Galoob again due to market and distribute the device in North America, but ultimately no Game Genie devices were released by Codemasters for the fifth generation of consoles. However, other companies have produced similar hacking devices such as the Code Breaker and GameShark. The Game Genie brand was later revived by the company Hyperkin, who released cheat systems for newer consoles.
Operation and design
The original Game Genie systems were pass-through devices that attached between a cartridge and the console. Upon starting the console, the player is presented with a menu that they can use to enter a series of characters, referred to as a "code", that reference addresses in the ROM of the cartridge. Each code contains an integer value that is read by the system in place of the data actually present on the cartridge. The Game Genie is covered by US Patent #5112051, "Interfacing device for a computer games system", filed May 30, 1990. This patent expired on May 30, 2010, according to current US patent law.
Because the Game Genie patches the program code of a game, the codes are sometimes referred to as patch codes. These codes can have a variety of effects. Most published codes give the player some form of invulnerability, infinite ammunition, level skipping, or other modifications that allow the player to be more powerful than intended by the developers. In rare cases, codes can make the game more difficult or even unlock hidden game features that developers had scrapped and rendered unreachable in normal play.
The Game Genie sold with a booklet of codes for use with various games available for the system. However, new codes continued to be developed and new games were released after these booklets were published. To address this, Galoob created a paid subscription service where subscribers would receive quarterly code updates. In addition, Galoob also ran advertisements in certain gaming publications, such as GamePro, that featured codes for newer games.
To create new codes, it is possible to enter random codes into a Game Genie. This evolutionary approach is equivalent to using random POKE operations. Usually, entering random codes will result in no noticeable change in the game or freezing the game and possibly corrupting save data, but a useful difference may appear in the game if this process is repeated many times. One must write down the random codes for each attempt because there is no method to view the codes after starting the game. Once a useful code is discovered, making slight modifications to this code has a much higher probability of producing additional useful codes. With ROM files, emulators, and decompilers for these games and systems, it has become possible to reverse engineer games to find specific ROM data to modify. This information can be directly converted into Game Genie codes.
On the Genesis/Mega Drive, the Game Genie can function as a country converter cartridge since most of these games are only "locked" to their respective regions by the shape of the cartridges and/or a set of a few bytes in the header of the ROM. Some games do not work with the Genesis Game Genie; The unit is also not compatible with Sega 32X cartridges (see "legal issues" below).