Bacteria, an avid gamer and techno-meddler extraordinaire, poured his heart and soul into a multi-system mega-console called Project Unity.  After just over $1000 and 3,500 hours of labor, the 18-system behemoth was born.
project_unity_cartsWhile it technically only has the hardware of 15 distinct consoles, Project Unity can play a few more systems worth of games due to several cross-console options, such as being able to play Atari 2600 games on the Atari 7800.  But that minutia doesn’t even matter because once you see how much effort went into stuffing the guts of 15 consoles into one functional unit you won’t even think about it.  It’s literally a breathtaking accomplishment!
Possibly the coolest and most ingenious feature is the universal controller.  It would have been an absolute coding nightmare to create one controller that worked with every console.  What Bacteria came up with is so cool it actually ruptured my geek gland.  What he did was create a controller that accepts old NES cartridges, and within those carts are unique circuits that change the buttons, joysticks, and D-pad to suit whichever console you want to play.  He even made labels for each console to replace whatever label was on the old NES cart before he assimilated it for the collective good of the project. 
The video is on the long side, but it is well worth the viewing time if you’re a lover of retro games, modern games, electrical engineering, and all around techno-hobbyist tomfoolery!  

image source: [technabob]