I recently (Sep 99) made some changes to tetris's handling of keys to (hopefully) make it more compatible.

If you're using a small bw display, such as a 640x480 monochrome laptop, use this version.

You might ask why this Tetris doesn't have a preview of the next piece or rotation in both directions. The answer is because I don't like it. You may disagree and play another Tetris.
Or yet another one.

written by Godmar Back, UofU, Computer Science Department, 1995.
Here is the source. Click for help.