Phew, glad Frogger is still ok!!
Great idea and concept! And it was very charming and extremely soothing... I could just relax and listen to those sounds all day. The gameplay was pretty good too! Nice take on the theme.
I think the only sorta issue is it eventually dawned on me the easy way to succeed is just spam the cars in a single lane. This seemed to work for me with no alien frogs getting through. I got to about 35000 when I decided to go ahead and let those frogs turn the river pink. Guess it may be a bit tough to solve something like that in a short period of time. Maybe occasionally there could be a normal non-alien frog you don't want to hit that could give you a power up?
Anyways though overall really cool and a great game to whip up for a jam! Still loving it's nice calming vibes... Great work!!