This is a funny take on this project, it's interesting to build a game out of the default example assets built into the game engine, but I think there's ways to make it more engaging. If you want to stick with only using the default assets, I think spending more time on the levels to make them a bit more maze-like so it takes more time to move through them, or more visually different, currently each level looks very similar and is very easy to complete. Another direction would be to make your own sprites and develop the game a bit more after a few default tea levels, that would add some original and unique levels and be one way to play with the expectations established by the tea level.