Yes. Quackle is now in diablo's extras-devel. BUT it is only tested on N800 and it needed some prerequirements. Installed size is 150M, so I have external memory card mounted to /opt (must be ext2). And it will crash couple seconds after start because it needs too much memory -> I have 1G swap partition on external mmc.

You can use computer for preparing memory card, but it can be done on N800, just install parted and something like this (don't mess, be careful):
(not sure how to properly make them persistent over boot)

Playing without hardware keyboard is not so fun. Clicking board will not open virtual keyboard. You must use field top of board.
Click field (keyboard opens)
Type coordinate of first letter. If word is horizontal, type (eg) 9H, if vertical use (eg) H9. Then space. Then word. Put already existing letters to parenthesis. Then press ENTER (this is mandatory!). Now commit button should be enabled, press it.

Here is 'upstream manual' for that: http://people.csail.mit.edu/jasonkb/...ackle-0.96.png