I thought this was a nice little one-portal-color puzzle. Maybe about an easy-medium puzzle. I was confused about one thing, though. You use the same colored fizzlers throughout, but they have different properties. The one by the gel dispenser allows a portal through, but not the player; the ones to room two do just the opposite. In my opinion, if a fizzler has different properties, they should have different colors to indicate that.
@RogerL: I'm sorry, but I'm not quite sure what you mean; the one by the gel dispenser is orange and the other two are yellow.
I couldn't tell the difference. And all of my video settings are as high as they go.
Send me some screenshots of them; maybe the game is using the same texture for the two fields.
Nice easy map and use of blocking fields.. I too was surprised when I flew through the upper chamber field as I thought it blocked like the lower one. Nice use of the screen near the upper button to show the effect of button activation...thanks for creating...
The difference between the two fizzlers was more apparent when I decreased my brightness level. But I still don't think I would have noticed the difference on a first playthrough. When you are trying to solve a puzzle for the first time, the last thing you care about is the color of the fizzlers. I would still recommend changing the color of one of the fields.