I liked this one so much I bought it again when the print version became available! I don't think I will run another D20 campaign without allowing players to use this book to advance their characters.<br><br> <b>LIKED</b>: It provides excellent flexibility to D20.<br><br><b>DISLIKED</b>: It is sometimes difficult to locate specific abilities, and index would be helpful.<br><br><b>QUALITY</b>: Excellent<br><br><b>VALUE</b>: Very Satisfied<br>

Open Core contains a variety of interesting concepts, but it falls short in execution. There are inconstancies in the rules and the grammar gets in the way of clarity in some places. Although these issues can be resolved (probably) through some careful application of thought, they impose an unnecessary burden on the reader and provide fertile ground for rules lawyers. There are two copies of the Campaign Power Level chart which are in disagreement. The example of character creation uses a ?campaign level? that is not in either of the charts. Some charts are poorly labeled (the skill purchase chart in the character creation example isn?t labeled at all). Numbers in examples do not always add up the way the rules would imply, though there is at least one case where the example is correct (what the designer apparently intended) and the rules themselves were misprinted. Many parts of the rules appear to have been written by somebody that has been deeply immersed in the system and is presuming the reader to be just as intimately familiar with the system. This set of rules is an excellent ?work in progress? that shows great promise and inventive thinking; however, it is in need of stern editorship and proofreading. I really want to like this product and sincerely hope that a revised edition is in the works.<br><br><b>LIKED</b>: The general concept is excellent. It could make a wonderful generic platform.<br><br><b>DISLIKED</b>: Poor editing and proofreading.<br><br><b>QUALITY</b>: Disappointing<br><br><b>VALUE</b>: Disappointed<br>