Welcome scene: Nice squidward and cool with the effects in the water. Makes it look much more real. Instead of writing ’start’ you could have used a ‘play’ button and thereby introducing icons to your project as well. Good with feedback on the interactive button.
Menu scene: You don’t have a menu scene.
Andre’s scene: Good idea using a slider for the rotation, I really like that! Unfortunately it is not possible to rotate the head 360 degrees. It good that you’ve used icons for the movement controls as they are intuitive easy to understand, but I don’t see any option to scale the object. Concerning the reset buttons, maybe combine them instead of having 2 separate reset buttons? I can see the idea in having a reset for the different functions (rotate, grow, etc), but when the controls are so few, then it would be fine to just combine the reset, I think. For the return button I’d suggest using an arrow (<—) instead of an exit/close-icon, and thereby sticking to the conventions. I know you could argue that you open up another window, and therefore you can close it, but given that the group develops in landscape mode for a mobile, I think the return button makes more sense than an exit/close-button. However, the placement of the button is very good, as that follows the general convention.