TNT

TNT (Trinitrotoluene) Crates, also known as dynamite or TNT boxes, are an explosive used by pigs that first appears in the game Angry Birds. Once struck, the TNT Crates explode, destroying objects within a short radius and send things flying away within a larger one. TNT Crates can prove to be quite useful for the player since a large, fortified structure can fall when blown up. TNT Crates appear in most of the games, with few exceptions.

These are the appearences:

Angry Birds
In Angry Birds, they first appear in Theme 2-15 and if hit, they give the player 500 points and explode upon contact, they are useful if destroyed in a huge mass. They are wooden crates with a label written "TNT" on it.

On Birdday Party, there's the Exploding Cake. The exploding cake is a black cake with the words "TNT" on it. When hit, it does something a little different. Instead, it turns into frosting like balls and doesn't seem to do much damage from the TNT crate itself, though it has the similar idea.

Angry Birds Seasons
TNT appears as the same thing like the first game, but there are some interessing variations of it, such as Black Pumpkins that act as TNT in Halloween episodes, Gas Tanks that give a small explosion, but also useful.

Angry Birds Rio
TNT appears as the same once again, there is also weaker other variations of it, such as the barrels, that give a very small explosion upon contact.

Angry Birds Space
They appear as the same once again, there is also some other variations, such as fire meteors that explode in the same way and Rocket Proppellers, that eject smoke and explode eventually.

Bad Piggies
TNT appears as an usable item that explodes in Bad Piggies. It can appear naturally on the levels, but it first appears as a minor appearance on level 1 of Ground Hog Day. They can be used to launch Ross to high points, there are variations of it that can be obtained on Loot Crates or by putting scrap on the Scrap Machine, the special abilities of some are the following:
 * Halloween Pumpkin: Explodes normally, but launches candies.
 * Alien TNT: Infinite and the explosion is bigger.

Angry Birds Star Wars
There are two variations of the TNT, the normal and iron, the normal is the same as before and the iron is harder to destroy, giving a bit more damage.

Angry Birds Star Wars 2
TNT appears the same as on the first Angry Birds Star Wars game.

Angry Birds GO!
In Angry Birds GO!, TNT crates serve as common, yet dangerous obstacles. They will blow up when collided into, slowing down the racer who crashed into them.

Angry Birds Friends
TNT appears on the levels of  both story and tournament levels, it first appears on level 4 of Surf and Turf (If considered the order of episodes).

On the weekly tournaments (Such as the Angry Birds Tournament), they appear as diverse variations, such as Barrel, Dynamite, Gift Box, etc.

In the Winter Tournament, there was a gift power up with gifts falling from the sky, then they unwrap into TNT crates, which all explode.

There is now a power-up called Boombox, that can be launched and parachuted at the pigs, if it reaches a hard object, it will explode, sometimes only gets damaged. There's also a TNT drop Power-Up on the Star Cup, that  are made out of iron, parachute themselves and unwrap the iron if nothing is happening, works the same as TNT.

Angry Birds Transformers
They appear on the levels, where they explode if an Autobot shoots at it, useful to destroy structures and defeat pigs.

Angry Birds 2
They appear as the same as the  previous games, there's a Jetpack Pig that explodes after proppelling himself a bit, there's also an Angry Pig, that explodes if defeated.

Angry Birds Action!
TNT appears on some levels, they appear as a red box that explode and launch a bird upon contact, they are also dropped by Pilot Pigs.

Angry Birds Evolution
TNT appears as multiple variations, such as huge, big and small. They first appear on Bird Town, and then appear on multiple levels of thhe game.

There is also the TNT Carrier Pig and Present Carrier Pig, that launch TNT into the birds.

Angry Birds For Facebook Messanger
They appear again as the same and are used by the pigs into their structures. There's also TNT Drop power-up, that drops a TNT on the local of player choice.

Angry Birds Champions
They appear on some levels, they work the same way.

Angry Birds POP 2
3 TNT Barrels are launched by the Minion Pig if he is charged.

Angry Birds: On Thin Ice
As the game itself is a board game, TNT appears as a toy, that doesn't has a mechanical way of special feature.

Angry Birds Telepizza
TNT is replaced by Jalapeño Boxes, that works the same way.

Angry Birds Chrome
TNT is replaced by Chrome Bombs in Chrome Dimension, which work the same way.

Angry Birds Volcano
TNT appears as the same, with no changes made to appearence. ​​​​​​

Gallery
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