TNT is very powerful in Minecraft Dungeons, but it can be a little confusing when you first find it. When you pick up TNT, you actually wear it on your head like a hat. You can then throw by hitting the button for your ranged attacks.
The important thing to remember is that the TNT will completely override your ranged attack while it is on your head, you will not be able to do any normal ranged attacks until you throw the TNT.
When you throw the TNT, it will explode in a huge radius, potentially killing lots of monsters. You need to be careful, as this explosion will cause friendly players to get damaged if they are caught in the explosion. The damage is considerable, and can easily kill one of your party.
One of the more interesting aspects of TNT is that you can carry up to three pieces of it on your head at one time. This gets a little dangerous because when you throw it, only one of them will go where you think it will go, while the others will fly off in pretty random directions. This means it is extremely easy to wipe out your squad.
One final note on the TNT is that if you get caught in a spider web, it can be dangerous. If you throw the TNT, you more than likely won’t be able to escape the explosion, so keep that in mind.
We are not sure right now if TNT can be used to break through walls and terrain, but we are doing plenty of experiments to try and find out.