If you're a fan of vim then why not try out my entry, the Vim Roguelike Challenge (VimRC)?
https://averyhiebert.itch.io/vim-roguelike-challenge
Vim and roguelikes have a lot in common: text-based interface, steep learning curve, a great potential for mastery, and a history of free/open source software. So why not combine the two?
Is it too easy? Too hard? Too weird? Let me know what you think.