Not only does the series bring fun gameplay to the table, but it also helped usher in a new era of mechanics in the 2.5D shooter genre. Whereas many games of the time only allowed characters to look left and right, Heretic gave gamers the chance to look up and down, as well, making combat more dynamic AND more satisfying.
Past more control over your character’s aim, Heretic: Shadow of the Serpent Riders also gave gamers an early look at a staple of modern video games - an on-character inventory.