Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

This is the WORST CD-ROM game I have ever seen! My 7-year-old daughter longed for this game all Christmas season and she is bored out of her mind with it after one hour. It is slow, skippy, etc. running on a new computer! Don't waste your money like we did, skip right over this dud.
Negative

works great! so easy to use with "click to DVD" software that came on my Sony Vaio PC. love it! I can finally have my home videos put on DVD easily, in about an hour or so.
Positive

As a long-time ERB fan, I have always favored the Mars series (right behind the Pellucidar series). As a youth, when I first bought the book, I had my doubts; having cut my 'martian teeth' on Pricess and Warlord. However, true to Burroughs style, the action picked up quickly and was on par with the other books in the series. A great read.
Positive