When Dracko mentioned ZeroRanger, I looked the game up and learned from a 2009 thread elsewhere that it had been in development for years and was a Game Maker project. I impulse-bought it at that point, despite being a little wary that I might find it too difficult to be enjoyable and that the limited palette might make the levels feel similar and repetitive.
But I was soon glad that I had taken a chance on the game. It’s fair and full of variety. And the third level completely won me over.
One thing I haven’t yet figured out is why you’d ever want to transform. It’s a fun gimmick, but it seems to make the game a lot harder. Especially the first couple times when I thought it was permanent and didn’t realize that I could switch back at any time.