Really good update package for two classic "DOOM-style" games - I probably played Heretic as much as I did DOOM back in the day, it was one of my favorites. Hexen I liked too, but always found it to be more challenging in terms of its playstyle and puzzle mechanics, but Heretic was pretty much medieval DOOM and is a fantastic game IMHO. Add in a bit of a visual update if you want (I believe it can be turned off), achievements, and bonus episodes for both games, this package is great and well worth buying for any fans of oldschool FPS games!