You are totally free to make whatever you want inspired by the My Famicase Exhibition.
If you want to take a quick look what other people made in the years before 2021 take a look under these links!
A Game By Its Cover 2015
A Game By Its Cover 2016
A Game By Its Cover 2017
A Game By Its Cover 2018
A Game By Its Cover 2019
A Game By Its Cover 2020