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Aperture Pyramid

A bit buggy in places. For example you can douse the cube with orange gel the first time around; and then another time when you drop it on the "right" side of the room (looking from the entrance), it can slide into the path of the laser, meaning you're stuck. However I got there in the end!

I actually completed it at the first try ^^ But I agree, it's a bit confusing to understand what button has what effect on the central puzzle X)

Still good level design, I suppose this is 'Medium' level too ^^

Another great chamber! Many cool ideas in it! Bravo! =^.^=

I see you're going for the most buttons in a map prize! Here's my blind playthrough:http://youtu.be/FOB3H77JhHw You can see I spent most of my time learning what the buttons did, and very little time figuring out how to use them. Don't be sureprised if someon finds a way to beat this in under a minute.

A revolutionary idea, utilizing a little portal and a lot of perception and planning, rather than just figuring out a puzzle. I'd also recommend you much more clearly mark the button that replaces the cube, or ensure it's the first button the player steps on so they know its effect immediately, rather than halfway through.
Also just a silly idea, try it with a circle in the glass you can shoot a portal through above the final button you drop the cube on, and add an effect that pressing that button permanently turns the walls around it portalable so you can retrieve the cube, and have the exit door opened by holding down three buttons.

SPOILER: it was necessary to paint the cube =3

this is a great map, for now I was not able to finish because I did an error and my cube slowed on the last stair !!