8 Disastrous Console Upgrades The PS4.5 Must Learn From

8. Sega CD

Sega's decision to start tinkering with its much-loved Genesis was arguably the beginning of a long and excruciatingly drawn-out end for the company's console ventures.

In a bid to gain some ground on the runaway Super Nintendo, Sega made a CD expansion for the Genesis, offering greater storage capacities, and added power that would allow for a 'Genesis 2.0' generation of games to come out. It also doubled as a CD player - a feature that played a big part in the PlayStation's success just a few years later.

So what went wrong?

At $300, the Mega-CD was alarmingly pricey, though western markets warmed to it thanks to a small but high-quality games collection, made up mostly of graphically-enhanced re-releases of Genesis games.

With that said, it still couldn't compete with the SNES, and despite over two million sales, Sega began closing development on the Mega-CD barely a year after its US and European launch.

What the PS4.5 can learn:

Don't make customers spend huge amounts of money on an incremental add-on.