TestChamber
by ajioe1111
With TestChamber installed, a creative testing dimension sits behind a crying obsidian portal, and inventories stay separate from the normal world.
What it does
TestChamber adds a separate testchamber:test dimension that players enter through a portal built from crying obsidian. Inside, the dimension is flat, brightly lit and free of natural mob spawning, and it forces creative mode. On entry the player's normal inventory is saved and replaced by an isolated test inventory, which is restored on leaving. Routes that would let items slip in from outside are closed off, so creative items stay inside the chamber.
Its central purpose is keeping creative items apart from the survival world on modded servers, giving builders a contained space to try machines, contraptions and automation. The portal frame is ignited with flint and steel, and its corner blocks can form a softer oval shape instead of the strict rectangle a Nether portal needs. Breaking an active frame collapses the whole portal. TestChamber runs on NeoForge for 1.21.1 and is released under the MIT License; it is not open source.
Key features
Sealed test dimension
A creative dimension with isolated inventories, entered through a crying obsidian portal.
Inventory swap
The normal inventory is saved before entry and restored when the player leaves the chamber.
Bypass blocking
Common routes into the chamber, such as external dimension teleports, are blocked by the mod.
Server configuration
Player commands switch on or off through the server config, and Curios slots can be reserved and saved.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does TestChamber need to be installed on both sides?
Which loader does TestChamber use?
Can creative items leave the test chamber?
In the catalog
TestChamber is one of 7,555 Cursed mods on ModsFinder, and one of 2,801 Cursed mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
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What the author says
TestChamber adds a private creative testing dimension for Minecraft NeoForge servers. It is built for modded servers where players need a safe place to test machines, contraptions, automation setups and other creative ideas without bringing creative items back into the normal world.
Official listing
- Modrinth page
- modrinth.com/mod/testchamber
- Owner
- ajioe1111
- Published
- 2026-05-23
- Updated on Modrinth
- 2026-05-23
- Facts verified
- 2026-10-15