Innumerable amounts of Chaingunners, Revenants and Archviles around every corner wait to fuck you up whenever possible.

The Plutonia Experiment - An entire megawad specifically created to make 1996 Doom players cry and ragequit.

At the end the maps become almost unbearably shitty and there's not much happening, other than killing one wave of monsters after the other.

TNT: Evilution - Starts off with nice looking tech bases, but turns into a same-ish looking slog not very much later.

No Rest for the Living - Created for the Xbox Live port of the Xbox 360 by Nerve Software.

wads made by different mappers from 1995, sold officially at retail stores.

Master Levels for Doom II - A bunch of absolutely shitty.

Doom 2's saving grace were, in the long run, the new monsters, the Super Shotgun and the mapping community. They make up with it by having larger concentrations of monsters and a sandbox-like feeling.

Hell on Earth - It is commonly agreed that the Doom II maps are worse than I's, showing signs of being rushed and having mostly brown-ish, boring areas.

Because of Romero it has also become common behaviour to shoot eyeballs to open secrets in every user. The maps are full of lava and filled with tight hallways. Most notably, he abused the difficulty settings to make Ultra Violence overly hard, while Hurt me Plenty was the actual default difficulty.

Sigil - After more than 25 years, Romero decided that it's time again to dab on a bunch of game journalists and release ANOTHER Doom 2 - prequel mapset, filled to the brim with bullshit encounters.

This episode was mainly created to make extra bucks from retail sales with Doom I (now renamed to 'The Ultimate Doom'), instead of mail orders.

Thy Flesh Consumed - Released after Doom II, Romero and other mappers created a bunch of prequel maps that were purely designed to piss off shitters who said Doom I was too easy.

Inferno - Mostly fugly, rushed maps with irritating, misaligned texture-placement and a pathetic final boss.

This is where Sandy Petersen's reign of terror started.

The Shores of Hell - A mixed bag of maps with great music and weird design choices.

Way too fucking easy, even back in the day - but basically acts as a 'design guide' for every newfag mapper. For this alone thousands of fanboys will fellate Romero until the end of time.

Knee-Deep in the Dead - The first episode, designed by John Romero.

How to play brutal doom coop