Great start overall. The building mechanic is fun and creative. The frogs are a good obstacle, adding the need for quick thinking and planning.
- I wanted to turn faster, and it was slightly too easy to fall off the platforms.
- Fighting the frogs was a little clunky, some more audio/visual feedback for it would help
- The water had a bit too much color for the tiles to pop out. An outline around the tiles would also help.
Building up a safe place to run around has a distinct feeling to it.
Then you begin to wonder: where did all the debris come from? Is there something out there breaking apart floating towns? As the thought sets in, it doesn't feel so safe after all...
EDITS: formatting