Master Levels for Doom 2 does a good job of showing that you don't need to add any new content to make a good expansion. Either that or maybe an expansion for Doom 2 will always be good because even if it's subpar, you're still playing Doom 2. But Master Levels isn't subpar, far from it. The level design is top notch and extremely rememberable, and I was quite surprised that 3 or 4 of the levels actually had a plot! And an interesting one at that. For the majority of the levels you're just playing doomguy, but for these 3 to 4 levels, you play a cyberdemon thats actually been turned into a human! And sentenced to death, the cyberdemon fights back and ends with a finale against quite a few cyberdemons. This is easily one of the most impressive stories in a game that only uses .txt docs to explain everything! And by completing all the levels, I have been happily awarded the title of "Master of Destruction!" At least, according to the game... I highly reccomend everyone to play this and become a "Master of Destruction" too! And you should already have it, unless for some bizzare reason you don't own Doom Classic Complete. But why wouldn't you?