Thanks for playing. I tried to make the pictures obvious about which ones are long and tall plus the animals themselves show the scale (elephant is large, centipede is tiny). I wanted to include a proper tutorial but unfortunately I ran out of time. I knew people might struggle with this aspect so I did add a hint that can be shown from the tutorial screen to make it more clear.
Th floatig houses is a know bug and again I sadly ran out of time to fix it.
I'm glad you likd the concept even if it was not clear about the mechanics.