OD&D Supplement II: Blackmoor
Based on your experiences what for you was the OD&D Supplement II: Blackmoor's rating, pros and cons?
Od&d Supplement II: Blackmoor (Hover)
Much like Greyhawk, Blackmoor was produced as a digest-sized book. Like its predecessor, its rules are also organized to match the three books in OD&D (1974): "Men & Magic", "Monsters & Treasure", and "The Underworld & Wilderness Adventures". The biggest physical difference is that it's slightly smaller, at 60 pages rather than 68. However, there was also a philosophical difference. If Greyhawk contained the rest of the OD&D rules, then Blackmoor had what Tim Kask called "New stuff". Blackmoor is clearly built on the core game system revealed in OD&D and Greyhawk. Thus it includes Greyhawk's "Alternate" combat and hit dice systems, subclasses, and more variable monster damage, just like in Greyhawk.