Memento Mori – Memento Vivere (5e/OSR/[not really]system agnostic) Not counting the introductions, this book contains 120 pages of content, but I need to preface that from the get-go with a statement, namely that this is a VERY dense book; with a different layout, this could easily have been 240 pages, or even more, so the length here seems almost deceptive...