You can already do this from the command line, for example:
./enalim -window -width 1200 -height 1200
Run ./enalim -help to see all the options.
Hello,
No Svaltfen is written in my own language: https://github.com/uzudil/benji4000/wiki/LanguageFeatures
It runs in a virtual machine that simulates a "lost" 80s home computer: https://github.com/uzudil/benji4000