In 2018, I had the opportunity to create a web app for University coursework, as a solo project. I chose to create a package repository for Minetest, an open-source project I help maintain.
Minetest is an open-source game engine with millions of downloads and thousands of weekly players. The project has a very active modding community, and many available games to run. There was one big issue - you had to manually install mods and games by unzipping their files into a directory. This was a very poor user experience.