Thank you!
Yes, it is very short unfortunately.
I didn't want to make it longer than it needed, there are 5 "features" (apple enemy, fishes, cactus enemy, spikes, boss) and I wanted every floor to have something new so that it felt like you progressed forward.
My goal was to have 10 floors, but I lowered it to 5 since I didn't feel like there was enough content to support it.
I definitely will!