TNT Duper
by Itamio
A dispenser holding a single TNT item keeps firing lit TNT, so TNT Duper lets a dispenser repeat that burst without the item running out.
What it does
The mod targets one redstone pattern: a dispenser that spawns and lights TNT from a single TNT item and keeps dispensing it rather than emptying. The duplication only changes the dispenser's item handling, so the explosions match vanilla TNT behavior. Builders use it to create automatic TNT farms that do not need repeated refills, which suits redstone contraptions that need repeated bursts.
The mod is server-side only, so players join without installing it and only the server needs it. It works in both single-player and multiplayer worlds, where the server runs the behavior. Fabric, Forge and NeoForge files are published for 1.12.2, 1.20.1, 1.21.1, 1.21.11 and 26.1.2, and the code is open source under the MIT License, released by Itamio.
Key features
Infinite TNT dispensing
A dispenser triggered by a single TNT item keeps dispensing lit TNT without running out.
Dispenser duplication
Dispensers duplicate TNT without consuming the TNT item that started the cycle.
Vanilla explosion behavior
The dispensed TNT follows the same explosion rules as ordinary TNT in the game.
Automatic TNT farms
Builders can run a farm from one dispenser and one TNT item, with no constant refilling.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Automatic TNT farms
A single dispenser can drive a repeated TNT burst, so the farm runs without refills.
Simpler redstone contraptions
Contraptions that need repeated bursts can use one dispenser instead of a stocked chest line.
Who it’s for: Redstone builders and server owners who run TNT-based contraptions. Only the server needs the mod, so it suits multiplayer servers as well as single-player worlds.
How it compares
Infinity TNT is a server-required mod with client optional, not open source and released under the MIT License, for 1.21 – 26.2 on Fabric, Forge, NeoForge and Quilt. Re-enable String Duper is server-side only and MIT licensed, covering 26.1 – 26.3 on Fabric and NeoForge. Lazy Redstone needs both the client and the server and is not open source, for 1.20.1 – 1.21.1 on Forge and NeoForge.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| TNT Duper | Fabric, Forge and NeoForge | 1.12.2 – 26.1.2 | Server-side only | 2026-07-11 |
| Infinity TNT | Fabric, Forge, NeoForge and Quilt | 1.21 – 26.2 | Server required, client optional | 2025-02-19 |
| Re-enable String Duper | Fabric and NeoForge | 26.1 – 26.3 | Server-side only | 2026-09-26 |
| Lazy Redstone | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-08-05 |
Questions
Does TNT Duper need to be installed on the client?
Which loaders does TNT Duper support?
Does the duplicated TNT explode like vanilla TNT?
In the catalog
TNT Duper is one of 8,499 Technology mods on ModsFinder, and one of 4,201 Technology mods for Fabric. 15,189 mods support Minecraft 26.1.2.
More from Itamio
Similar mods
What the author says
Allows dispensers to duplicate TNT without using up the TNT item.
Official listing
- Modrinth page
- modrinth.com/mod/tntduper
- Owner
- Itamio
- Published
- 2026-03-30
- Updated on Modrinth
- 2026-07-11
- Facts verified
- 2026-10-15