What are your Top 10 Things what you like all about Doom?

[Hellsmith1]

What are your top 10 things that you all like about Doom, Hexen, Strife, custom item's, monsters, levels & etc...

My top 10 things that I like all about Doom & custom levels:
10: Finding new enemy
9: Knowing whats going to happen next
8: Trying to find new secrets
7: Not getting hurt
6: Trying not to get lost
5: Getting a new weapon
4: Finding new items
3: Destroying monsters
2: Finding the Exit
1: Having a good time

[Dancso]

10: Shooting at monsters until they die
9: Picking up weapons so i can shoot at monsters
8: Picking up health kits so i can shoot at monsters with renewed strength
7: Opening doors so I may meet more monsters to shoot at
6: Getting keys so I can find more monsters to shoot at
5: Using cheats so I can shoot at monsters without fear of dying
4: Causing infighting so that the monsters shoot at monsters while I shoot at monsters
3: Punching monsters before I shoot at them
2: Getting a time freeze powerup so that the monsters can see all the joy I'm having shooting at them
1: Typing MDK in the console to shoot at monsters I'm too weak or cowardly to shoot at legitimately

[cambertian]

In no particular order

The general college-brand immaturity that seeped into the final product
The fast-paced action (and in Heretic/Hexen's case, the fact that it's not bogged down with its own RPG elements)
The fact that I can navigate most levels without looking at a map
The great variety of weapons that are all fun to use
The mood (especially in Doom 64)
The extensible engine
The community around it
The fact that it runs on nearly everything
Heretic/Hexen's theme
The multiplayer

Honorable mention: The fact that Quake came out of it

[Reactor]

Not a like-scale, each aspect is equally important:

1: Random behaviour of enemies, they cannot be predicted when they'll attack
2: TONS of secret areas!
3: Secret levels, Easter-Egg-ish or not
4: Monster infighting
5: Music
6: The useful inventory items
7: It works on even the oldest laptops, you don't need to buy a damn power plant and download 9 millions of programs to run it
8: The story of the game. Hellgate London is just a poor ripoff
9: The great variety of monsters, as opposed to soldiers just in a different colored uniform
10: The long campaign

[Matt]

In no order whatsoever:

K
Moddability
9
Universally applicable BAL1 graphic
八
All enemies are literal demons, ironically not actual murder simulator the way most other FPSes are
sieben
Subtle, possibly unintentional Christian critique of modernity, per Lewis, Seraphim Rose, etc.
110
"Robotron 3D gameplay"
۵
Smoothness of movement and elegance of interface without precedent or successor
៤
(G)ZDoom
316
The way the messages are informal and chatty without coming off as talking down to the player
Ⅱ
The low-budget pioneer metal/punk vibe to everything (related to #3 and #10, possibly #7)
ܐ
The story!

[Xaser]

1. Who the Fuck stole my Topics?
2. Who the Fuck takes no Shit?
3. Who the Fuck are your Sons of the Bitches?
4. Who the Fuck kicked my Ass?
5. What the Fuck you Guys are Doing?

[Ixnatifual]

1. The speed.
2. The setting.
3. The guns.
4. The level design. Often open, plenty of secrets, ambushes, good mix of outdoors and indoors, light and dark, high and low.
5. The sounds.
6. The satisfaction it gives when you blow away enemies.
7. The cooperative mode.
8. The art direction.
9. The no-nonsense simplicity of gameplay. No need to target items and push a key to pick them up - just run over them.
10. The lack of hand-holding. No arrows telling you where to go, no blue circles showing you where the items are etc.

[leileilol]

1. Depth Dwellers sucks
2. Blake Stone sucks
3. Jurassic Park sucks
4. Quarantine sucks
5. Corridor 7 sucks
6. Dr. Radiaki sucks
7. Operation Bodycount sucks
8. Terminal Terror sucks
9. Terminator Rampage sucks
10. Marathon sucks

[TheMightyHeracross]

1. The fists
2. The berserk pack
3. The chainsaw
4. The pistol
5. The shotgun
6. The super shotgun
7. The chaingun
8. The rocket launcher
9. the plasma gun
10. The BFG

[Xeotroid]

1. A lot of mods
2. Huge replay value
3. Fun weapons
4. Overwhelming amount of mods
5. It's twisted, sick and gory (well, not twisted enough, today... )
6. Making me jump everytime I go around the corner and see a monster there (is that a thing I like?)
7. Did I say mods?
8. The way it evolved just by community
9. Incredible satisfaction of shooting things
10. Mods, once again.

[Naniyue]

10. Killing evil demons with your fists.*
09. Killing evil demons with the pistol.*
08. Killing evil demons with the BFG.*
07. Killing evil demons with the rocket launcher.*
06. Killing evil demons with the chaingun.*
05. Killing evil demons with the shotgun.*
04. Killing evil demons with the super shotgun.*
03. Mods, mods, mods!
02. Source ports, esp. (G)ZDooM!
01. Full mouse look, jump, and crouch (in the source ports, anyway).

* In first person view.

[Hellsmith1]

My top 10 thing that I like about Doom & Hexen custom monsters from R667?

10: Overlord
9: Lord of Heresy
8: Pyrodemon
7: Bruiserdemon
6: Annihilator
5: Avater
4: Desentinel
3: Pyrozombie
2: Hell Apprentice
1: Hellsmith

[taufan99]

10. Controversies surrounding it
9. Simplistic, old-school gameplay
8. Varied bestiary
7. Level designs
6. The fact that it is an open-source game and anyone can make either source ports or mods based on it
5. Fearsome atmosphere (this is especially true to some console ports, such as the PSX and SNES ports)
4. Large-scale, active community
3. Not overly emphasized story
2. The fact that it innovated both first-person shooter and multiplayer gaming
1. Simplistic engine, which allows it to be played on nearly every platform, be it a computer, a phone, or even a calculator, either with cutting-edge or old technology.

[doom_is_great]

1. Interesting level design.
2. Endless custom maps.
3. Many different mods to modify Doom to your liking.
4. Each gun is different and has different functions and is not exactly the same.
5. Each monster is different and not exactly the same.
6. The gore.
7. The simplicity.
8. The subtle horror elements.
9. The speed.
10. Secrets.

[TheMightyHeracross]

10. Controversies surrounding it

Why?