well I finally had the idea to contact the author
turns out that low and behold the anxiety game is basically contained in the Stress management game! - so at least we can get that one. the bad news is that the depression game - actually called "the esteem game" is out of print. I asked him to look into this - he said that he'll tell the publisher that at least one person wants it -- but now we have two that want it!!
by the way, I've started using the self-control game and it's really great...