Placeable Gunpowder mod lets you place down gunpowder as a fuse for TNT that can be any length: no need for repeaters and redstone.
You can light it with flint and steel or fire arrows, and you can also place it with dispensers. It does a bit of damage to entities standing on it as it goes off. It should work with any modded TNT as well.
How to install:
- Download and install Minecraft Forge.
- Download the mod.
- Go to %appdata%.
- Go to .minecraft/mods folder.
- If the “mods” folder does not exist you can create one.
- Drag and drop the downloaded jar (zip) file into that.
- Enjoy the mod.