Also potentially of interest, my FPGA Tamagotchi: https://github.com/agg23/fpga-tamagotchi/

Both of these systems, being segmented LCDs and very slow CPUs, don't really receive benefits from being implemented in hardware, but users in environments like the Analogue Pocket and MiSTer like having a variety of systems available. These two projects have served as learning milestones as I self teach myself FPGA development.