Bro I can understand I am also new to game development what I recommend you is that you just start making a simple game with ok like square and shapes and follow the theme you can do much wall with just shapes start from there and if you like you can then use some free assets instead of the shapes but I like the shapes more. If you need any idea I have one for you make a game where is a psycho triangle shape tries to kill all the shapes and rule the world of shapes and there be like he killed every shape and the other shapes must protect themselves triangle attacks all shapes it's a small idea but it will be cool I think so just try making anything like the idea make the triangle red colour I love Red ♥️colour. 😁