This was a personal project to make a custom video game console in this case using an FPGA, a couple of years back I finished one using microcontrollers and an actual CPU.

This project uses just enough SRAM and external components and a just enough powerful FPGA to be a retro-styled video game console. I wanted to learn how to use FGPAs and continue to learn how video game consoles worked while building something unique.

So in a way, in terms of the technology, they're similar, except of course a Mister is something a lot more useful, I would say, as it simulates "real devices" and has a huge game library and this is just an educational project.