I enjoyed it although I did not make it very far. The style was nice. The AA guns were annoying given that you could not kill them. I know you were telling a specific story and it may not work with that but it might be nice if each plane could take out different enemies. Maybe Charles' plane is a bomber that can take out the AA guns while Franz' fighter could take out the flying enemies. A thought. I just think it would be cool if both planes had a purpose besides not dying.