What if Sony had developed the SNES CD add-on? There might not have been the PlayStation. Find that and more in this interesting list. Would you have bought any of these systems if they had been released?

Sega Neptune

The Sega Neptune was basically a two-in-one game system (Genesis/32X), planned for release in 1995. Unfortunately, by the time a working protoype was ready, the Sega Saturn took the spotlight.

Sega felt that consumers would not be interested in the Sega Neptune, so the project was scrapped. Of the two prototypes that were made, neither actually functioned, but were just empty cases. The proposed retail price for the unit was US$200

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Atari Jaguar Duo

Like the Neptune, the Jagaur Duo was a dual system, combining the Jaguar and Jaguar CD into one console. Unfortunately, the Jaguar CD didn’t sell as many units as the company had hoped, so they scrapped the idea before a prototype was built. [Source]

NanoGear

Basically a portable PC, NanoGear is what the GP2X should’ve been. It allows users to create their own games with the included tools and sports built-in networking.

Pretty high tech handheld that looks like it never got off the drawing board

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Sega VR

Sadly, Sega’s answer to Nintendo’s Virtual Boy never quite made it. Basically, it “was based around an IDEO virtual reality headset (HMD) with LCD screens in the visor and stereo headphones. Inertial sensors in the headset allowed the system to track and react to the movements of the user’s head.”

The company claimed the project was stopped because the VR was so real users would move while wearing the headset and injure themselves. The limited processing power of the system makes this claim unlikely, although there were reports of testers developing headaches and motion sickness

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SNES CD

What some of you may not know is that Nintendo actually had contacted Sony to develop this accessory, but in the end, the talks fell through.

Ultimately, negotiations with both Sony and Philips fell through, and the two companies went on to develop their own consoles based on their initial dealings with Nintendo (the PlayStation and the CD-i respectively), Philips also gaining the right to release a series of CD-i titles based on popular Nintendo franchises

[Source]