From Diablo Wiki
Destructible is a term the parts of the environment that can be destroyed by spells or other attacks by player characters. These include things like tables, chairs, doorways, and stair railings.
There are two basic types of destructibles in Diablo III.
- Incidental junk, which are things like furniture, railings, pillars, and other decorations that get broken during the course of combat, sending chunks flying in visually-pleasing fashion.
- Clickable hazards, such as chandeliers, sagging walls, torture machines, and other objects that will fall down crush enemies beneath them, if they are broken or triggered at the correct time.
Use of Destructibles
These objects can be blasted to try to find gold or items hidden in them, or just for fun. More interesting are the various booby traps found in the dungeons; walls propped up on wooden supports, chandeliers connected to fraying ropes, or other such accidents waiting to happen. When these types of environmental objects are broken, intentionally or accidentally, they will crash to the ground, dealing damage to anything they land on.
Destructibles are very common; there are things to be broken in every room in the subterranean dungeons, though most of these are just decorative objects like chairs and tables. The larger, trap-like destructibles aren't as common and those are not always easy to see in advance, when they can best be used to damage enemies. It's not clear how fully destructibles will be integrated into outdoor environments; none are seen in the outdoor scenes from the WWI 2008 Paris gameplay movie (June), though the grass underfoot is burned and crushed by various spells.
Destructibles can damage your character as well as the monsters; in testing on the BlizzCon 2008 demo build (October) players who knocked over a wall on their own heads were damaged and stunned, while the nearby skeletons were killed outright.
The design and implementation of destructibles were discussed in the D3 Lore and Environmental Art Panel from the WWI 2008 in Paris (June). The following quote comes from a rough transcript of that event:
- "Big thing we wanted to bring into environments of D3. Make them feel more alive. Destructibles! How we use environment with selective destruction to your advantage. Use it to kill monsters with collapsing walls, or just for bonus fun visuals. Ultimately, how much breakable stuff we include comes down to fun. There's no scientific formula; it's just very cool to break stuff. That's what we go after; how much before it become overwhelming? Lot of it, lot of fun to go around stomping stuff."
In June 2010, Bashiok explained further on destructibles, as fans inevitably misinterpret previous statements:
- "Only specific interactive objects will actually damage enemies. The falling wall, detachable chandeliers (AND MORE!). They’re specific ‘trap’ items that you can lure enemies toward and then spring on them. The little bits of physics objects that bust apart from destructables don’t cause damage. You’re in charge of doing damage - not seeing how much debris you can fling at a monster."
Fan Reactions and Influence
Jay Wilson commented on destructibles in a press conference from BlizzCon 2008. During that session Jay was asked about fan reactions to the game, and he listed two things fans were really excited about; Wall of Zombies and environmental destructibles. Jay added that one of the reasons Blizzard liked to show their games so early was that it let the design team fine tune and tailor things by the fan reactions -- a response that makes the addition of more and better destructibles seem inevitable. Of course, they choose the most intelligent fan reactions to make changes; In the art controversy, they didn't put much attention to fans screaming for less colour, but they did promise a slower fade-out time of monsters.
Jay spoke about this again in an interview from Blizzcon, admitting that the positive reaction of fans influences the artists to go a bit overboard in adding too any destructibles. 
So after that, we went into the game and put in a whole bunch of objects to destroy and crush monsters. More collapsible walls and barrels that roll out and hurt things, and chandeliers that fall on stuff. Anything that looked like it could fall and hurt the enemy. What we found though, was that it wasn’t that cool. A lot of it was just kind of distracting and clunky and hard to use. It wasn’t that fun. On some of the levels with destructible we increased the them by like a factor of twenty, which just made them super not fun. I’ve been like, hitting the designers with sticks for six months now to get them to pull those back a bit.
That kind of stuff probably wont have a huge impact on the game strategy. It’s generally a lot more awkward to use a destructible to kill something. And it’s generally more fun to just flat out kill it with your own characters. Occasionally it will be there, it’s fun to hit a wall and see it fall down, but we’re being very careful not to force it.<\blue>
==Destructibles and Physics==
Jay Wilson talked about the rules of in-game [[physics]] that govern the behavior of destructibles in an interview from Blizzcon 2010: [http://diablo.incgamers.com/blog/comments/blizzcon-2010-interview-jay-wilson-diablo-esp/]
Known Destructible Objects
- Walls (some specific) - Damages monsters
- Pillars, posts, and supports of all types can be destroyed, causing large walls and other supporting objects to topple.
- Detachable chandeliers - Damages monsters
- Besides chandeliers, numerous other objects can be triggered to fall from overhead or off of walls, in most dungeons.
- Furniture - Sometimes have loot
- Book cases
Destructible is in some way involved in the following achievement(s).
| Grave Buster
|10||Destroy 50 tombstones.||No Award|
| Light Entertainment
|10||Kill 666 enemies with a falling chandelier.||No Award|
| Situational Awareness
|10||Kill 1,000 enemies using the environment.||No Award|
| Demolition Derby
|10||Get a destruction callout for breaking 50 objects.||No Award|
| Jars of Destruction
|10||Destroy 1,000 pots of ashes.||No Award|
| Destroyer of Destiny
|10||Destroy all 4 Activated Pillars in the Royal Crypts at once.||No Award|
Destructibles are hard to capture or discern in still screenshots. They are best seen in motion, and demonstrations of them virtually fill the various Diablo III gameplay movies. Check out this brief YouTube clip of a few destructible highlights, for example:
|Monsters of Diablo III Beasts Beasts: Superunique Demons Demons: Superunique Humans Humans: Superunique Undead Undead: Superunique Objects Bosses Boss Mods Monster Info Fanmade|
Bat - Beast - Blood Hawk - Demonic Hellflyer - Electric Eel - Khazra - Lacuni - Lamprey - Quill Fiend - Rockworm - Sand Monster - Sand Shark - Sand Wasp - Scavenger - Spider - Spiderling - Swarm - Withermoth - Wood Wraith -
|Primary Quest Uniques||
Act One Bosses:
Skeleton King -
The Warden -
Strong CC (Limit 1): Knockback -- Nightmarish -- Vortex -- Jailer
|Act One Uniques||Araneae - Web Spit||Leoric - Summon Skeleton, Teleport Strike, Triple Cleave||The Butcher - Smash, Grappling Hook, Spear, Frenzy Charge|
|Act Two Uniques||Maghda - Forcefield, Summoning Ritual, Punish, Moth Dust, Teleport.||Zoltan Kulle - Fiery Boulder, Time Bubble, Ceiling Collapse, Energy Twister,Vanish, Creepy Laugh||Belial - Phase One: Triple Fireball, Summon Vipers. Phase Two: Poison Meteors, Ground Pound, Lightning Strike, Lightning Breath.|
|Act Three Uniques||Ghom - Acid Slime, Sneeze, Gas Cloud, Chomp.||Siegebreaker - Triple Hit, Charge, Leg Stomp, Grab and Throw.||Cydaea - Pain Bolts, Web Trap, Spider Pits.||Azmodan - Bellyflop, Laser Attack, Falling Corpses, Demon Gate, Pool of Destruction, Globe of Annihilation.|
|Act Four Uniques||Rakanoth - Cleave, Teleport Strike, Blade Strike, Volley, Summon Minion.||Izual - Frost Nova, Frozen, Summon Minions.|| Diablo - Phase One: Claw Rip, Charge, Hell Spikes, Shadow Vanish Grab, Curse of Destruction, Ring of Fire, Ground Stomp, Curse of Anguish, Curse of Hatred. |
Phase Two: Shadow Clone. Phase Three: Overdrive, Lightning Breath.
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