Hi, I really like this game, with these cool graphics, this customization. I also have a suggestion. Unless, as you said, your game engine is not good enough for it, can you add a level editor? I really liked the many mazes in in older versions of the mobile port of PAC-MAN and the also many mazes of another fan-game (It has nothing wrong, I just prefer these graphics).
The engine for this definitely was not built with a level-editor in mind. In fact, a lot of how this game was built was pretty bad. It was my first big project getting back to game development, and looking back on it now, there are so many issues it would take just as long to fix them as it would to completely rebuild the game from scratch. That might be a plan for the future, but for now I couldn't add anything significant like that without completely redoing the whole game.