Frogout

As usual humans are to blame for ruining the planet and rightly so! I guess that last nuclear plant eruption was one too many! Only a few people survived and a swarm of deformed mutant flies which are threatening to wipe out the rest of mankind! But you're a frog which got out alive and you're making it your soul mission to rid the planet of these disgusting inhabitants and make it safe again for the rest of the humankind!