Portal Blocks: Build Portal 2 Test Chambers in Minecraft
For builders who want to recreate the precise look and logic of Aperture Science, the Portal Blocks add-on is a direct upgrade to the classic PortalGun mod. It supplies the missing construction elements: floor and pedestal buttons, portal-ready and non-portal panels, indicator lines, and light fixtures. This is a catalog-style guide to what the mod includes, how to install it, and which Minecraft versions support it.
Core Building Components
The mod is designed for map creators who need authentic Portal 2 details without relying on command blocks. Every item interacts with the cubes and portals from the PortalGun mod, so you can build complex puzzle logic with standard redstone mechanics.
Buttons and Activation
- Floor Button – Functions like a pressure plate but emits the recognizable Portal 2 activation sound. Crucially, it responds to PortalGun's weighted cubes, enabling classic object-carrying puzzles.
- Pedestal Button – A wall-mounted button that outputs a short redstone pulse. Ideal for vertical surfaces and matching original lab interiors.
Indicator Lines
In the Minecraft 1.7.10 build, indicator lines transmit redstone signals without the standard 15-block falloff and do not require repeaters. You can run them indefinitely along any surface, including over themselves. Note: wall-mounted lines currently display but do not receive power; the developer plans to fix this in a future update. This mechanic greatly simplifies hidden wiring in large maps.
Panels: Portal and Non-Portal
- White Panels – Portal-compatible surfaces. Multiple variants exist, including double-height panels that auto-place the upper or lower half when you install one block.
- Black Panels – Non-portal blocks. They are treated as semi-transparent, allowing light to pass through. Useful for hiding light sources.
In the 1.10.2 version, double-height (2 blocks) and quadruple (2x2) panel variants automatically complete missing sections when you place a single block.
Light Panels and Atmosphere
Lighting is handled via overlay panels. In the 1.7.10 version, these were separate blocks with left/right and top/bottom options. Starting with 1.10.2, light panels attach directly onto existing panels, covering the left, right, or both sides, and can be mounted on walls, floors, or ceilings. Each light source is two blocks tall, producing the recognizable glowing lines of test chambers.
Music Discs
Exclusively in the 1.7.10 version, the mod adds five music discs with Valve tracks from Portal 2, including "intro," "apple," and "chambertop." Play them in standard jukeboxes to fill your map with the lab's signature atmosphere. Porting this feature to 1.10.2 is not confirmed.
How to Install Portal Blocks: Build Portal 2 Test Chambers in Minecraft
Before you download Portal Blocks: Build Portal 2 Test Chambers in Minecraft, verify you have the correct PortalGun mod version installed. The blocks will not function without it. The add-on supports two primary Minecraft versions: 1.7.10 and 1.10.2. The 1.7.10 branch offers more content (indicator lines, music discs) but has some technical limitations. The 1.10.2 branch includes reworked panels, the overlay light system, and auto-completion for multi-block structures, though some features are still being ported.
For a quick setup, use a launcher with a built-in mod catalog. This lets you install Portal Blocks: Build Portal 2 Test Chambers in Minecraft for Minecraft and its dependencies in a few clicks, bypassing manual file placement and version matching. Always back up your world before adding mods.
Practical Use for Map Builders
Combine white and black panels, infinite indicator lines, and cube-reactive buttons to construct puzzles of any complexity. You can build full test chambers with moving platforms, lasers, and light bridges using only standard Minecraft mechanics plus these two mods. The lack of repeaters and the ability to hide wiring keep your final build clean and performance-friendly.
Portal Blocks is not a decorative pack; it is a functional toolkit that closes most gaps left by PortalGun. Despite the version split and some in-development features, it already turns an ordinary map into a genuine Aperture Science puzzle. If you are a Valve fan or need new mechanics for your projects, download Portal Blocks: Build Portal 2 Test Chambers in Minecraft and start building.