I just ran into what I think is the same problem when trying to use Ctrl-S under Vim in Terminal.app. I found a related tip indicating that by default, Terminal.app reserves Ctrl-S for old-fashioned XON/XOFF flow control. Adding this line to my .bash_profile -- or just entering it at the prompt -- freed up Ctrl-S and Ctrl-Q for use with Vim:
As far as I know, every emacs under the sun can run in a terminal:
/Applications/Emacs.app/Contents/MacOS/Emacs -nw
Change the path, of course, if your emacs resides elsewhere. If this is too long to type, even with tab completion, you can create a symlink to the Emacs executable, or make an alias for your shell.
Best Answer
To start emacs just type emacs↩
This tells the shell to look for an executable file emacs in a directory listed in the PATH environment variable.
When in emacs run the command tetris that is escxtetris
The controls are the arrow keys
Note that something seems to be wrong with the score file e.g. it won't save high scores etc.