Good game idea, the growing mechanic is nice.
I found the obstacles sizes incoherent like how can you absorb a tree but not a rock, even if the rock is way smaller, but you get used to it after some time.
I wish you added some visual signals when the ice cream powerup or the thunder's effect ends.
Also, as you seen in DC (my 521600 highscore), adding more houses or obstacles at some point in the game would make the score more a matter of skill than time.
Apart of that, I really liked both powerups.
I feel like a lot of work was put in the sound design, it gives a very good atmosphere, and the SFXs make the game even more alive.
Good job !