- Story-specific gameplay, which is about features that are very story-related, but it's not optional and impacts the gameplay heavily. One example is Planescape: Torment's main character, the Nameless One, an 'immortal' which loses his identity and memory every times he dies. When the player(in control of Nameless One) dies, he doesn't lose the game, but he re-awakens with his entire memory removed. What better way to
The problem is that doesn't actually explain immortality. It simply demostrates it. If you wanted to go into the philosophies of immortality, it's impliactions, nature, etc then you would need an in depth dialogue scene to explain these things. You can only demonstrate things through gameplay. To explain them you need to show it through cutscenes. The ending conversation and monologue of MGS2 couldn't have been explained through a cutscene because it was trying to impart something specific and knowledge thus language based in nature.