It is not fully private. You can browse without an account but cant use the site's search. If you don't want to create an account you can use a search engine like duckduckgo like adding
site:rutracker.org to your query
You can find games like this one in rutracker which require no installation, decompression or dwarfs thing, only the files.
Just like what you'd have after installing a repack
https://code.tecosaur.net/tec/emacs-everywhere works for emacs, maybe try changing the code to work with vim or just use evil mode in emacs?