Another of his themes was the duality of the seriousness and lightheartedness of games, which is why he added a serious death scene to the first chapter. Itoi's Nintendo 64 version of the ending was darker, "dirtier", and more upsetting, though the final version changed little in concept. Itoi attributed the change in tone to his own growth and the character composition of the new development team. Itoi later reflected on the ending's lesson on the virtue of helping bad people. Itoi felt that the ending's renewal theme reflected his worldview of appreciating our time on Earth in light of the planet's inevitable end. Much of the rest of the script was written after-hours at a local hotel where they would continue their work.