really impressive and all, but i feel it kind of lacks progression. feels kind of like a very early stage of a game that could be really fun. maybe add some upgrades (temporary or maybe a money and upgrade system could be implemented), new areas, new enemies, maybe even different playable characters. not sure if you have any future plans for this project but the way it is right now it doesn't feel very rewarding to play. first few runs were actually really fun because the controls were very simple but enjoyable, but once i got the controls down it was like that was the only thing this game really had to offer, which made me kind of sad because i was just starting to get into it. the only thing that you can really do is move to the right, maybe knock over some buildings while you're at it (which is actually pretty fun, only doing so doesn't do anything besides giving you the satisfaction of senseless destruction >:D) but you find out pretty soon that everything stays the same. eventually a bit more people and buildings will spawn but you can fly by them very easily so it really doesn't change the difficulty whatsoever. the speed at which you are moving also doesn't change (at least i didn't notice any change).
that said i do think its a very charming concept that if fleshed out could be actually really fun! only reason i gave you my critique is because i do feel it has potential, sorry for the long read thx for reading anyway :)
Edit: found out you actually grow larger when destroying stuff but as far as i could tell growing larger didn't increase you hitbox so except from providing a sense of progression it doesn't do much. it is a nice touch though!