If you like high fantasy...
Collection by Danielle Weil
If you enjoy high fantasy books questioning the nature of good and evil, you may enjoy some of the following...
'A Game of Thrones', book one of the 'A Song of Ice and Fire' series by George R.R. Martin
'The Wheel of Time' series, by Robert Jordan (and Brandon Sanderson)
'Wizard's First Rule' of the 'Sword of Truth' series, by Terry Goodkind
'Malazan Book of the Fallen' series of books by Steven Erikson
'The Fionavar Tapestry', by Guy Gavriel Kay
The seven volumes of 'A Song of Ice and Fire' series by George R.R. Martin
14 books in the Wheel of Time series
'The Malazan Book of the Fallen', by Steven Erikson
'The Mistborn Trilogy', by Brandon Sanderson
The three books of the 'Mistborn Trilogy' by Brandon Sanderson
12 of the 17 books written to date in the 'Sword of Truth' series, by Terry Goodkind
The three books comprising the 'Fionavar Tapestry' series by Guy Gavriel Kay