Hi,
I collected all the animals, but unfortunately there was no fireworks or completion screen :).
Well, at first it was hard to play because there was little money, but when I started to level up just the economy, it became much easier :).
The graphics were nice, the sound effects were good.
When you buy a new package and open it, the opening sound will play, but if you manage to click a few more times, the opening sound will play again for each click, I think it would be good to only play it once.
It would also be good to have a splash screen with a welcome message or just a short tutorial, game commentary is good, but they don't get much attention.
As for the background consisting of lines, my eyes got tired of these lines quite quickly, I think I need to come up with something to make my eyes not get tired so quickly, whether it's working on the background, or contrasts, or something else.
Well, it wasn't fast :), but it was fun, congratulations!