I agree with the other reviewers, but somehow I think that getting trapped or losing a cube with no way to get it back is part of the challenge! Thanks for a nice looking map!

Found a couple ways to break this map, and get stuck. First off, the laser cubes need spawners in case you pull them outside and fizzle them/drop them in water. Cos if that happens, the map becomes unfinishable. Secondly, there should also be a button next to the companion cube spawner to respawn the cube. I found that if use it to open up the laser room, then place a portal inside, and a portal nearby, then grab the cube off the button, throw it through the portal, then remove the one from the laser room, the cube is trapped inside, and again, makes the map unfinishable. Lastly, you can do a similar thing where you put a portal in the laser room, take the cube off the button, toss it away, then go through the portal and remove the one from the inside, you can become trapped in the room. Hopefully, you can fix these matters and hopefully become more aware when play testing your maps.

I made a map inspired by this. (http://steamproxy.net/sharedfiles/filedetails/?id=643645848)

This map needs work. The concept is OK but you left a gap in the fizzler allowing the player to shoot a portal in the back wall making the lasers extraneous. Thanks for your work.

The room with two lasers is just for joke?