
Re: similar quality sites?
I have to confess that I haven't really surfed the Web for English materials in years. However, I do know of a few sites that have ESL materials for young learners.
www.bogglesworldesl.com - has some higher level worksheets and conversational materials
www.esl-kids.com - has some flashcards and worksheets
www.esl-galaxy.com - has all kinds of of stuff. I haven't looked through the site, but it seems to have a bunch of stuff on there and the owner, Futonge Kisito, has a handful of related sites as well.
I don't know if any of them have developed printable conversation games, but esl-galaxy is probably your best bet.