Portal Gun & Chambers

Portal Gun & Chambers brings a Portal 2 style portal gun to Minecraft (Fabric 26.2), together with full test chamber dungeons to solve with it. Shoot a blue portal and an orange portal onto any flat surface, look through them in real time, and walk, jump or fall between them. Then find a test chamber entrance and think your way through up to 35 puzzle rooms.

Also on Modrinth: https://modrinth.com/mod/portal-gun-26.2

The portal gun

• Left click shoots a blue portal, right click shoots an orange portal. Portals open on any flat surface, even up to 800 blocks away.
• Live portal view: you see the other side through each portal, players and mobs included. Two portals facing each other show the view inside the view.
• Momentum carries through. Fall into a floor portal and fly out of a wall portal.
• Portals open with a flaming rim and shrink away when closed. If a wall has no room for an upright portal, it is placed sideways.
• Grab and carry cubes, blocks and mobs with the gun, even through portals.
• Portal 2 style crosshair: two crescents that fill in when each portal is open. The gun’s light takes the colour of the last portal fired.
• Portal shots pass through glass, glass panes, iron bars and chamber grating.

Test chamber dungeons

• White entrance buildings appear in new chunks. An elevator takes you down to the lobby. Use /portalgun locate to find the nearest one.
• Each dungeon strings together 10 to 35 rooms picked from 90 hand-built puzzle chambers, so no two dungeons are the same. Every room has one intended solution, and about 20 of them are hard.
• Rooms teach each element on its own first, then combine and twist them.
• Chambers look like Portal 2: white portal panels only where the solution needs them, dark metal everywhere else, light strips, observation glass, chamber signs and antlines that show which button powers which door.
• The dungeon loops round, so the last room opens back into the lobby. A reward chest waits at the end, and the reward grows with the dungeon’s length.
• Dungeons are protected: walls, doors and fixtures cannot be mined, blown up or picked up. They are placed so they never cut into villages or other structures.

Test elements

• Cubes and buttons: Weighted Storage Cube, Weighted Companion Cube, Edgeless Safety Cube, Discouragement Redirection Cube, Cube Dropper, Super Button, Floor Button and Pedestal Button with timer.
• Lasers: Thermal Discouragement Beam, Laser Catcher, Laser Relay and Laser Field. Redirect beams with the reflection cube or through portals.
• Hard Light Bridge: a solid bridge of light you can send through portals.
• Excursion Funnel: a tractor beam that carries you and your cubes, and also works through portals.
• Gels: Repulsion Gel (bounce), Propulsion Gel (speed), Conversion Gel (makes any surface take portals) and Cleansing Water to wash gel away.
• Movement: Aerial Faith Plate, Piston Platform, Flip Panel and Angled Panel.
• Hazards: Toxic Goo, Crusher, Material Emancipation Grill and Sentry Turrets.
• Characters: Sentry Turrets, Wheatley, who follows you and talks, and GLaDOS, a boss with 150 health.
• Gear: Long Fall Boots stop fall damage.

How to install

1. Install Fabric Loader 0.19 or newer for Minecraft 26.2.
2. Put Fabric API in your mods folder.
3. Put this mod’s jar in the same mods folder and start the game.

Works with Sodium and Distant Horizons.

How to get the gun

Creative inventory, Tools & Utilities tab, or run /give @s portalgun:portal_gun. Chamber blocks, cubes and test elements are in the Building Blocks, Functional Blocks and Redstone Blocks tabs, so you can build your own chambers too.

Controls

• Left click: shoot a blue portal
• Right click: shoot an orange portal
• G: grab or drop the cube, block or mob you are looking at
• V: clear your portals

You can rebind G and V under Options > Controls > Key Binds. Controller players using Controllable can bind “Grab Mob” to any button in Controllable’s settings.

Settings and custom colours

Install Black’s MCM alongside this mod to get an in-game settings page for it. You can:

• Change the colours of both portals and the gun with a colour picker.
• Set portal view quality, resolution, view distance and glow.
• Tune fire cooldown, grab range and throw speed.

Black’s MCM is optional. Without it, the mod uses the default settings.

Performance

Portal views render at half resolution with a 6 chunk view distance by default, so the mod runs well on handhelds such as the ROG Ally and Steam Deck. For sharper views on a strong PC, add these JVM arguments: -Dportalgun.viewScale=1.0 -Dportalgun.viewDistance=10

Credits

Based on iChun’s original Portal Gun mod. A fan-made mod inspired by Portal and Portal 2. All models, textures and sounds are made by hand. Not affiliated with or endorsed by Valve.

If you like these mod revivals and want to see more, support development on Patreon: https://patreon.com/123black