Nintendo-NES

The Aladdin Deck Enhancer, produced by Camerica and developed by Codemasters, is a cartridge-based system that allows software on Compact Cartridges to be played on the Nintendo Entertainment System.
It is similar to the Datach system for the Famicom, but without the Barcode feature.
It was released in November 1992, with its planned library to reach a total 24 games by the end of 1993. However, only seven games were actually released.

El Barcode Battle de la NES.
Ambientado en el universo de Dragon Ball este tipo de juegos ya triunfaba por esos años en Japón.
El procedimiento es muy sencillo, con una serie de cartas con códigos de barras que aquí tendrían su equivalente en los típicos cromos se conseguía una nueva forma de jugar a los juegos de lucha

Disk Hacker is a Famicom Disk System disk made by Hacker International that allows a gamer to pirate disks.

There are several versions of software capable of tampering with your FDS and games available on the black market. Another common name for this type of software is Copy Master, which allows you to play pirated games and tune your FDS.

The 3D System consists of a pair of active shutter glasses and an adapter to connect them to the Famicoms third player expansion port. The glasses are connected to the adapter via dual 3.5 mm jacks. This allowed compatible games to display a stereoscopic image similar to that of the Sega Master Systems SegaScope 3-D Glasses. Games would play in conventional 2D until a 3D mode was activated by use of the select button.[3]

The 3D System was not commercially successful and, as a result, was never released outside of Japan.[2] Criticisms included the clunkiness of the glasses and the limited selection of compatible titles. Eight years later, in 1995, Nintendo again ventured into stereoscopic gaming with the commercially unsuccessful Virtual Boy. In the following years, Nintendo experimented in stereoscopic 3D with both the GameCube and Game Boy Advance SP systems, but these features were not released commercially due to cost and technical limitations.[5] Finally, in 2011, Nintendo released the 3DS handheld capable of displaying stereoscopic 3D images without the need for special glasses. The 3DS has enjoyed a largely positive reception and sales numbers dwarfing those of its predecessors.

The Famicom Net System (Japanese: ファミコンネットシステム Hepburn: Famikon Netto Shisutemu?), better known as the Famicom Modem, is a video game peripheral for Nintendos Family Computer, released in late 1988 only in Japan. It uses a card based format, reminiscent to the HuCard for Hudson Softs and NECs PC Engine or the Sega Card for the Master System.[2][3] It allowed the user access to a server that provided live stock trades, game cheats, jokes, weather forecasts, horse betting, and a small amount of downloadable content

The StudyBox, released by Fukutake Publishing Co, Ltd., was much like a tape player for the Famicom. The accessory was small enough to fit on top of the Famicom, to plug into the connector. Also like a tape player, the top of the StudyBox would open to reveal the compartment where tapes were played.

The StudyBox itself did not have the standard Play, Stop, Pause, Fast Forward and Rewind buttons on the system, as would be expected with a tape player. Instead, the student (presumably) would use the Famicom controller and on-screen cues to play the tapes.

We don’t exactly know what the tapes would do. The purpose of the StudyBox was to make the Famicom more educational, giving students the ability to learn about whatever information was contained on the tapes. The tapes were, of course, only sound and voice, without visuals to accompany the studying.

Power Glove es un mando de accesorios para Nintendo Entertainment System

El Power Glove vendió más de 100,000 unidades en los Estados Unidos. Sus ventas brutas ascendieron a $88 millones de dólares.
Los juegos que eran especialmente hechos para el Power Glove se vendieron poco y el Power Glove fue un fracaso crítico y comercial.
El Power Glove no era muy popular y fue criticado por su imprecisión y dificultad para los controles de uso.

El editor Craig Harris de IGN clasificó al Power Glove como el séptimo peor mando de videojuegos.

R.O.B. (acrónimo de Robotic Operating Buddy) fue un accesorio creado por Nintendo para la consola Nintendo Entertainment System. Se lanzó en 1984 en Japón como Famicom Robot, y un año después apareció en Estados Unidos con el nombre de que más se le conoce, R.O.B. Tuvo un corto período de existencia, debido a la poca utilidad que hacían los videojuegos de este accesorio; únicamente dos. Con los años ha llegado a convertirse en un icono, debido al uso como personaje que la propia Nintendo le ha dado en varios de sus juegos.

permitía jugar a juegos como Gauntlet, Kings of the Beach, Bomberman 2 o Nintendo World Cup con varios amigos a la vez y alargaba el metro de cable de los mandos de la consola hasta un total de cinco gracias a una conexión por infrarrojos

El U-Force es un mando creado por Broderbund para la NES.
Utiliza un par de sensores de infrarojos paralelos en perpendicular para transformar el movimiento de las manos del jugador en señales para el controlador.
Considerado uno de los peores mandos de la historia.

Modifications to the standard Quick Disk format include the NINTENDO moulding along the bottom of each Disk Card.
In addition to branding the disk, this acts as a rudimentary form of copy protection - a device inside the drive bay contains raised protrusions which fit into their recessed counterparts, ostensibly ensuring that only official disks are used.
If a disk without these recessed areas is inserted, the protrusions cannot raise, and the system will not allow the game to be loaded.
This was combined with technical measures in the way data was stored on the disk to prevent users from physically swapping copied disk media into an official shell.
However, both of these measures were defeated by pirate game distributors; in particular, special disks with cutouts alongside simple devices to modify standard Quick Disks were produced to defeat the physical hardware check, enabling rampant piracy.
An advertisement containing a guide for a simple modification to a Quick Disk to allow its use with a Famicom Disk System was printed in at least one magazine.