When opening the application in itch.io the user will immediately know the theme of the app, which is shown with a nice banner and background with bamboos. This creates a nice and relaxing atmosphere for the user.
The choose menu scene is very simple and easy to navigate, and the yellow buttons have a nice contrast to the green background. This helps minimize the cognitive load, but is too simple. More graphics should be used, since they have a big impact on the user experience and can be used to attract attention. The application should be attractive and inviting to the user. The buttons should also be a bit bigger since this is an application for a phone, and they can be hard to click if they are too small. The location of the buttons is good, since they are easy to reach when the phone is in landscape mode. When interacting with the buttons they give visual present feedback by turning red, which contributes to a good user experience. The text on the buttons also shows future feedback, since they describe what will happen when they are clicked.
The panda scene has an inviting background with some nice colours and objects that fits the nature theme. The Panda in the middle of the screen attracts the users attention, and it is clear to see that this object is the main focus of the scene. The panda and the background objects are nicely built and shows a good understanding of ProBuilder. The buttons are the same as in the previous scene, which is good UX, since it provides visual consistency. The buttons have the same feedback as well, but again should be bigger, to be easily interactable on a phone. The location of the buttons is mainly at the bottom of the screen, which is the easiest part of the screen to reach. The movement buttons are located together since they have similar functionality, and the rotate and growth are also close to show interaction with the object. The home button is usually at the top left corner of the screen, but since the rest of the buttons are located at the bottom it shows consistency to keep it there.
Overall a very good application with some well made objects and good UX principles applied. Could use some minor changes to fit a smart phone better, but still very easy to use and understand for users.