How to solve Portal: Revolution Chamber 9

Chamber 9 in Portal: Revolution Chapter 1 threatened to end my entire playthrough of the game. I couldn’t figure it out for the longest time. I finally beat it, so here’s how you can beat Portal: Revolution Chamber 9.

Portal: Revolution Chamber 9 Chapter 1 – How to beat it

The constant goal of Chamber 9 in Portal: Revolution is what I like to call moving the goalpost. All you need to do is keep moving the box past the barriers. Easier said than done.

Related: Can you play Portal: Revolution on Steam Deck?

Start by placing your blue portal near the red button on the ground. Go through it, press the button to spawn a box, and then take the box back through the orange portal on place it on the ground button.

This disables the first barrier. Now, shoot your blue portal up onto the ledge where you started in the room. Walk to the box spawner and press the button. Now, grab the box and go through the orange portal.

Place the box so it cuts off the laser; that shuts off the second barrier. With that down, shoot your blue portal on the sky bridge above. This allows you a walkway to the exit door…but you’re not done yet.

After walking across the sky bridge and using the catapult to launch over to the other side, place a blue portal on the wall. Walk through it, press the box spawner button, and then take the box through. With the box on the other side of the glass, you’ll again place it so it cuts off the laser.

With the second barrier down again, shoot your blue portal at the sky bridge. Use it to walk across and get to the catapult. Launch yourself over and grab the box.

With the sky bridge established and the box in hand, place the box on the button and use the sky bridge to walk to the exit door. Congratulations! You’ve completed Portal: Revolution Chamber 9. Have fun with Chapter 2, and make sure to keep an eye out for achievements.