Another idea for a new level:

• Copying content to paste it somewhere else with y + p
• Whatever you delete will be moved to the yank so e. g. ddp will remove a line and add it below the next one (called swapping I guess)

Awesome job on this game! I truly enjoyed learning this way. Maybe next we could add deleting characters (x or d) and lines (dd)

I'd like the arrow keys to work (or at least have a well-hidden option to make them work). I use the neo layout [1] where it is really inconvenient to use hjkl, while you have perfectly accessible arrow keys on esdf (just on a different layer).

Thanks for your consideration ;)

[1] http://neo-layout.org/