Function run_with_play 

pub fn run_with_play<G, F>(game: G, play: F) -> ExitCode
where
    G: Game + Serialize + DeserializeOwned,
    G::State: Serialize + DeserializeOwned,
    G::Action: DeserializeOwned + Debug,
    G::View: Serialize,
    F: FnOnce(G, &PlayArgs) -> ExitCode,

Like run, but the game supplies its own interactive play handler (a bespoke UI, say) rather than the built-in text stepper.

The headless new/query/act and self-play commands are handled here exactly as run does; only the interactive play command is delegated to play. This is how a game ships its own terminal UI (see examples/blackjack) without reimplementing the rest of the CLI.