interfaces.ts

interface Game {
    title: string;
    description: string;
    readonly genre: string;
    plataform?: string[];
    getSimilars?: (title: string) => void
}

const tlou: Game ={
    title: "The Last of Us",
    description: "The best game in the world",
    genre: "Action",
    plataform: ["PS3", "PS4"],
    getSimilars: (title: string) =>{
        console.log(`Similar games to ${title}: Uncharted, A Plague Tale, Metro`);
    }
}  
console.log(tlou.title);

if(tlou.getSimilars){
    tlou.getSimilars(tlou.title);
}

interface DLC extends Game{
    originalGame: Game;
    newContent: string[];
}
const leftbehind: DLC = {
    title: "The Last of Us - Left Behind",
    description: "You play as Ellie before the original game",
    genre: "Action",
    plataform: ["PS4"],
    originalGame: tlou,
    newContent: ["3 hours story", "new characters"]
}

class CreateGame implements Game{
    title: string;
    description: string;
    genre: string;

    constructor(t:string, d:string, g:string){
        this.title = t;
        this.description = d;
        this.genre = g;
    }
}