When comparing Heretic vs Doom, the Slant community recommends Doom for most people. In the question“What are the best DOS shooter games?” Doom is ranked 1st while Heretic is ranked 4th. The most important reason people chose Doom is:
Doom was the game responsible for the explosion in popularity of the FPS genre. Doom was so revolutionary and influential that, for a generation, games in the First Person Shooter genre were known merely as "Doom clones".
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Adjustable difficulty levels
For those looking for a challenge or something easy to play there are adjustable difficulty levels, meaning any skill level can have fun with the game.
Pro Responsible for popularity of the FPS genre
Doom was the game responsible for the explosion in popularity of the FPS genre. Doom was so revolutionary and influential that, for a generation, games in the First Person Shooter genre were known merely as "Doom clones".
Pro Impressive graphics
Doom had impressive graphics at the time.
Pro Fantastic soundtrack
The DOOM soundtrack is classic and it'll have you headbanging through the levels.
Pro Pioneered Networked Multiplayer
Doom was pioneering its immensely popular Networked Multiplayer mode.
Pro Unprecedented support for customizing the game
Cons
Con Not much of a story
A heretic that has descended to hell in order to destroy demons is about the gist of it, not much exposition is given, if at all. While it does not detract from the gameplay, there is little reason to play this game for the story.
Con Difficult to play online
While there may be some workarounds, the original release did no support any online multiplayer due to so few having internet back in 1993.