Great! - I really liked the C64 games, was always fascinated how the water fills the pipes.
I'm not 100% sold on the visuals though :/ - I just don't think they work for the game - there's too much detail and on a small mobile phone screen, or even a tablet screen the detail will be lost.
I think that it's worth considering moving the visual style into one extreme or the other - I mean, either make the visuals simpler and chunkier, more cartoonish, like worms...
- or -
Make the graphics pixelated, so the pipe might be only 8 pixels wide, maybe a bit like Super Crate Box...
Hope you understand what I mean. Personally I like pixelated games - when dealing with that sort of scale, a handful of particles can go a long way. You could have water gush out of the pipes for example, which might be tricky with higher resolution games - but with a pixelated game, a pixel particle effect can be really visceral, change colour depending on velocity and it'd look awesome I think.
Health, Ammo, and bacon and eggs!
