In fact, there is more than three turrets. There is five. But the two other are different. They are not in the same place. So as Cave Johnson would say: "Let's test this test!"

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Click here to download The Three Turrets

Click here to download The Three Turrets

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Good start. One can bypass the first chamber by portaling through the blue gel and cleaner gel - forgetting that - it was kind of fun getting both cubes - but even then didn't need to (see above).
Turrets were not a factor - never really faced them. Good use of gel in puzzles in last rooms.
Thanks for mapping.

Pretty creative map, I liked the use of gels in that last room. Was a bit puzzled as to what I needed to do for a while, but I got it quickly enough.

Also, I guess this would be an unintentional easter egg, but you could actually get over to the ball dropper in the last room with the combination of blue gel and orange gel. Not that that accomplished anything or breaks the map in any way, but it did give me some ideas. In fact, this map actually gave me several ideas for two unorthodox puzzle mechanics that I inadvertently found, so thanks for that.