http://www.spongelab.com/

I'm considering this program for my sons, who are 8. They are very interested, but I can't find many real reviews on it to help guide me on whether it would be appropriate or worthwhile. I know the one they want was just released (Sept), but is there anyone here who has used this, or the earlier version? I think the Genome Lab part was released earlier. The trailer and info on the website doesn't really give me a sense that I understand what we would be getting, nor does it indicate whether the program would work well on older laptop.