A very nice and concise rule set; however, the Product Identity claimed within Fenris 2d6 almost caused me to only give a three star rating and failed to award four or five stars which this OSR undoubtedly deserves.
Product Identity [IP] is there to protect the author and creator. Yes, this is good, it protects your work... What is not good is when page 147 has the following Product Identity (see below) that is so vanilla and generic that one could find the following in just about every 2d6 rule set which rolls high. (The most absurd is "Roll a 2d6. [IP]" - seriously, that's IP?). A quick search through the document reveals that [IP] is used 1,058 times in 162 pages... That is excessive and saddens me as this is a great reinterpretation of OSR gaming at its best.
Below, examples and the Designation of IP blip...
Whenever you attempt an action that has some chance of failure, you roll two six sided dies (2d6). To determine if your character succeeds at a task you do this:[IP]
Roll a 2d6.[IP]
Add any relevant modifiers.[IP]
Compare the result to a Check Roll Number.[IP]
A natural unmodified die roll of 2 is a failure.[IP]
A natural unmodified die roll of 12 is a success.[IP]
DESIGNATION OF PRODUCT IDENTITY
The name “Fenris 2d6” when used in any context, is product identity. Additionally the content of paragraphs, and sentences which are followed with “[IP]” in superscript or subscript are product identity. The content of table cells which are followed with “[IP]”in superscript or subscript are product identity. The titles and entire content of tables which have “[IP]” in the bottom row are product identity. All artwork created by Gregory B. MacKenzie is product identity. The Trade Dress of this work (font, layout, style of artwork, etc.) is reserved as Product Identity.