Back in the 80s when I was a kid, My parents bought me a Game and Watch game called Vermin. It was actually a TimeOut Exterminator. It was a really simple game with just left and right controls and the idea was to hit moles that were emerging from the ground. The screen consisted of pre drawn monochrome lcd images that were turned on and off when they were needed to be displayed. I loved that game and played it for many years. My parents still had it many years later and I ended up selling it on eBay and got quite a lot for it.
A few months back I was listening to one of my favourite podcasts "Retro Gaming Roundup" which featured the Top 10 Game & Watch games. This re-ignited my interest for the Game & Watch series and so I decided to build one of my own only mine would feature a graphic LCD and allow me to emulate multiple Game & Watch games and even write new ones. Source code and Schematics can be found in the final step.