I don’t see how the gameplay helps with the programming tasks, and I don’t see how the programming tasks enhance the gameplay. Let’s assume the game is already finished, I think the game part would be improved by replacing the programming part with a simpler, more rewarding mechanic. And the programming part could be improved by getting rid of the gameplay, as it would remove distractions. Pulling off educational games that people actually want to play is notoriously hard because of conflicting goals. IMO you should aim for a more integrated experience with in-game “coding” and direct feedback.