Nice game and really fun! Although I saw a few problems when I played:
Every enemy seems the same except the red snake which is just faster. I know they have different health but because I'm getting more frogs as I get harder enemies I'm just too powerful for those enemies. Also, there was not point of exploring the whole map. I just stayed in the side of the map for the whole game and didn't explore so if there's no reason to move around a lot more the map shouldn't be that big. One thing that kept me at the same spot the whole game is the flies I had to eat after killing enemies which made me kill some enemies then kill more enemies a bit farther away and then come back to take the flies. The final boss was pretty cool actually. I liked the way he damaged me a lot and forced me to rebuild my army of frogs before he comes again. Though I would love to see him more before he died. The whole game took a bit too much time for that tiny bit of real action.
Anyways, I do love your game and although it may seem a lot the core gameplay loop is really funny and has lots of potential. Keep working!
Good job!