Love the flow of switching between worlds. A someone else mentioned it did take me a while to remember which colours were safe and which weren't. Also found that the switching while moving felt a bit laggy. But those are both minor polishing changes. The core of this is really good, having to think in two spaces at once to make sections of jumps is really fun.

Nice one! I really like visuals and colors in your game, and level design is sooo good! Player movement could be a little bit more smooth, also I keep forgetting which color I should turn spikes/coins to not kill me :D I mean, it would be easier for me if, for example, purple coin/spike is killing me, white is harmless. But I finished the entire game with pleasure! Really nice work :)

very good, this is by far the most interesting version of the "spikes are actually good" games i've seen

Really awesome, love the concept. (please play my game if you could)

Very neat!  Reminds me of Ikaruga but with platforming.