The game can be played entirely from the keyboard, as long as the command input field remains in focus. Commands can be submitted by pressing the ENTER key (a.k.a. RETURN or GO). Up and down arrow keys allow recalling/selecting previous commands. If you wish to stop playing and to continue at some other time, it is not necessary to use the save command – just open this page again and you will be offered the option of continuing the current game, if there is one. The game runs locally on your machine – there is no network access. All data storage relies on your browser's sand-boxed data store.
If you have any problems getting the game working or with the game itself, feel free to drop me a line at firstname.lastname@example.org.
the magic of Emscripten