If you enjoy Newtonium Engine this is a must have expansion. For a measly $5 you get access to some game changers. First off the sub archtypes are great. For an extra prerequisite you get a further defining of your arcehtype that really helps to give some focus to a character. Even if you don't use them it really helps broaden the scope and ideas of what you can do with the Fury archetype. Furthermore the new combat options greatly expand upon what you can do in combat, giving greater variety and tactics to encounters. Finally, more talents, more options for elemental control (and example elemental spells), and more occult rituals leave this expansion chock to the brim of good stuff for vastly expanding your character creation options. If every expansion is like this each one is a must have for this game as Newtonium Engine will truly come into it's own with all the options on the table.