It was the Zoombini logical journey. It was flipping hard, too. I mean, a then-year-old is not so logical, lol, but they were so cute that I had to try. There were like, these hundreds of Zoombinis imigrating from Zoombini island to some other place, and they had to passt all these logical tests. I only reaced level three in difficulty. xD

http://www.amazon.com/Zoombinis-Logical-Journey/dp/B00005LBVU/sr=8-1/qid=1157628797/ref=pd_bbs_1/103-9317113-4296612?ie=UTF8&s=software