The witch's energy skill does not seem to work - "you may spend one energy to keep your cards in your hand at the end of your turn." I noticed this last time, she was the daily challenge, and again today.
I get the fact that this is based on some reality where cars can't jump yet, but add a jump! Jumping could help you collect power ups just make them spawn at an appropriate height, and it is less annoying to just press space than move my cursor off of a target to collect a power up.
This game tries to be great, but seems like the developers spread themselves too thin. Focus on one thing. I thought the first part was fun, and it had a little bit of dolphin olympics in it. The second level was horrible... no upgrades, completely bases on luck. I would pass upgrades the entire time and not hit any... Also, it's a fish: why would air be good for it, but water slows it down?
This game is great for paranoid people like me. With each successive level, I start seeing the change in detail and difficulty, and start seeing patterns in lights, color changes, etc. Very good concept.
Glad you liked it! How did you get stuck? Do you have a screenshot, or any details that will help us find the bug?