I had fun taking Sparky around and watching the world burn! Cute art, too :)
Easy game to pick up, and it's fun to plan your path around the world. I feel like maybe things ramp up almost too quickly for my taste. The early game was fun because there was a little bit of risk in deciding which path to go for, and the mid-game was fun to watch things just get engulfed. I feel like the late game falls off a little bit because Sparky takes up the whole screen and (presumably) the burn radius takes up the whole map, so the winning strategy becomes sitting still. It would be neat to see some kind of factor introduced at the end to encourage more active play in the late-game.
All-in all, though, I had fun with this one. Nice work!