Why can't I open the easter eggs like Tetris on Emacs?

Question

I am in terminal on a Mac, and I type in emacs tetris. It comes up with a blank page and something at the bottom saying: Loading image...done, but that is it. I leave it for a little while but nothing happens. I try emacs dunnet and emacs doctor, but the same thing happens again.

Answer 1

If you call emacs <something>, the parameter passed will be a file.

echo "test" > test
emacs test

This will open the file called "test".

If you want to play Tetris on emacs, just open it with emacs, then press Escape, then x, and then enter tetris.

_{I obviously suck at Tetris.}

Answer 2

If you want to start tetris from the command line, use

emacs -f tetris

From the manual:

-f function, --funcall function
        Execute the lisp function function.