I'd get pissed off if I posted, wanting suggestions, and people just told me what my came compared to, or was like...or what it shouldn't be like.

Personally, I LOVE the style, and how the white walls are parallaxed! It REALLY gives a nice effect to it! I also like your idea of having the red ball. The only thing I can mention is to fix the hitTesting physics of it, and maybe change it so that it rolls around, like the shark? Or nevermind, it could be interesting the way it is right now!

Instead of clicking inside the white space to put the ball there, I think that you should need to drive up with the shark, and insert it in a specific point. Then, the walls create some sort of maze, right? Well, to get the ball around, you need to drive your shark around too, so that would also restrict the places the ball can go (a good thing). You can use the ball to unlock certain walls, or doors and such?

For the shark, I think it should eat little fish, that count as points. To go with the atmosphere, you should have some sort of fans as an obstacle. you could go with some cool bubble effects coming from them, and they slowly push the shark away or something...

That's my input, but you go your own way! I'm really liking it so far!

P.