Critic Randy Lander, in a review of the reissue, said "Blackmark" "started to push the boundaries of what comics could do. The book does not look particularly revolutionary in 2002, but when you consider that it was created over 30 years ago, this illustrated novel that is a mixture of science-fiction and fantasy genres and is unquestionably aimed at an adult audience, starts to look a lot more impressive. ...Goodwin and Kane take a fairly predictable plot and stock characters and make it a fascinating and twisted ride. ... The material sometimes features cheesy dialogue or veers into melodrama, but mostly it holds up remarkably well. It's hard to argue against the merits of "Blackmark". It's a piece of comic-book history, a solidly produced book and an example of work from two of the finest creators to grace the medium".