Poor.
Oh dear. I don't think the 3d format, as it were, really works for this game. It makes it hard to see things porperly, you are stuck with a fixed perspective that only lets you see the things very close to you, which can be quite hard when you get to the river crossing part and are looking for logs to help you across.
Still, as a Frogger game goes, it is alright, having all the elements you would expect from it. Unfortunately this also includes the ridiculous premise that a frog doesn't know how to swim, meaning that every fall in the water is instant death. This is easily the silliest idea ever, and one that isn't your fault. However making a Frogger game puts you in the same firing line for criticism.
Overall, an average Frogger clone, with some nice looking visuals, hampered by a bad angle.