the product is of very good quality, and I greatly appreciate being able to make more "realistic" worlds with temperatures, atmospheres, and biospheres that are more cohesive with one anothee. The additional tech level and population tables are honestly far more helpful than they may seem at first glance. I do have a few issues with the guide, though.

1) no temps for "Inert gas" atmosphere. While it certainly isn't a deal-breaker, it does leave me guessing on how to make a realistic world of that type. 2) The Temperature table is missing the 12 row. For the die rolls on the temperature table, it lists 2 through 11 without a 12 row. Again, not a deal-breaker but does make me wonder if it was a mistake or intentional 3) World Tags. The new tags aren't bad, but they can be a bit vague. "Strange Custom" and "Taboo" are prime examples. These tags are good, but the world tags are usually meant to take guesswork on how to put two and two together out and let the GM focus on building the rest of the world.