Experimental practice example with arrays, lists, I/O, classes/instances, conditional statements, etc.

Game.cs

using System;
using System.Collections.Generic;
using static System.Console;

namespace ExplorableAreasI
{
    class Game
    {
        List<Location> locations = new List<Location>();
        Random random = new Random();

        public Game()
        {
            Title = "Explorable Game";
            Player.GetPlayerName();
            ReadKey();
            SetUp();
            Run();
        }
        public void Run()
        {
            string input = "";
           
            while (input != "x")
            {
                Clear();
                WriteLine("Your inventory: ");
                foreach (string s in Player.Inventory)
                {
                    WriteLine(s);
                }
                WriteLine(Player.Name + ", where would you like to visit?");
                Menu();
                input = ReadLine();
                if (input == "x")
                {
                    //end game
                    WriteLine("Thanks for playing!");
                    ReadKey();
                }
                else
                {
                    //error checking would go here to make sure that it is a number
                    Travel(Convert.ToInt32(input));
                }

            }
        }
        public void Menu()
        {
            int i = 1;
            foreach (Location l in locations)
            {
                WriteLine(i + ". " + l.Name + " (" + l.Description + ")");
                i++;
            }
        }

        public void Travel(int choice)
        {
            int item = 0;
            Clear();
            choice--;
            WriteLine("You are now at " + locations[choice].Name);
            item = random.Next(locations[choice].Items.Length);

            if (locations[choice].Name== "Zjarri Grave")
            {
                if (Player.Inventory.Contains("heat suit"))
                {
                    //they can enter the lava field
                }
                else
                {
                    Console.WriteLine("You are barred from entering. Return after you have found a safety heat suit.");
                    Console.WriteLine("Press any key to continue...");
                    Console.ReadKey();
                    Run();
                }
            }

            
            if (locations[choice].Items[item] == "")
            {
                WriteLine("You look around the area. Not much to see. Maybe you should try visiting again later?");
            }
            else
            {
                WriteLine("You've found something! One " + locations[choice].Items[item] + " has been added to your inventory!");
                Player.Inventory.Add(locations[choice].Items[item]);
            }
            WriteLine("press any key to continue...");
            ReadKey();
            Run();
        }

        public void SetUp()
        {
            Title = "Super Awesome Adventure Exploration!";
            Location Sylth = new Location("Sylth", "Snow field", "ice sword", "snow gnome");
            Location BadCity = new Location("Bad City", "Technologically savvy urban city", "star", "grunge gnome");
            Location GoodeCity = new Location("Goode City", "Urban city with a dark side", "power gloves", "power gnome");
            Location ZjarriGrave = new Location("Zjarri Grave", "Lava field", "lava rock", "fire gnome");
            Location SweetSea = new Location("Sweet Sea", "Beautiful sea on the coast", "heal pack", "water gnome");
            Location LegsOnFire = new Location("Legs On Fire", "Picturesque mountains", "potion", "heat suit");
            Location ClockWerk = new Location("Clockwerk", "Fantastical town", "silver sword", "attack gnome");

            locations.Add(Sylth);
            locations.Add(BadCity);
            locations.Add(GoodeCity);
            locations.Add(ZjarriGrave);
            locations.Add(SweetSea);
            locations.Add(LegsOnFire);
            locations.Add(ClockWerk);
        }
    }
}

Location.cs

namespace ExplorableAreasI
{
    class Location
    {
        public string Name = "";
        public string Description = "";
        public string[] Items = new string[] { "", "", "rock", "credit", "apple", "" };

        public Location()
        {
        }

        public Location(string name, string description, string item1, string item2)
        {
            Name = name;
            Description = description;
            Items[0] = item1;
            Items[1] = item2;
        }
    }
}

Player.cs

using System;
using System.Collections.Generic;
using System.IO;

namespace ExplorableAreasI
{
    class Player
    {
        public static string Name = "Anonymous Hero";
        public static List<string> Inventory = new List<string>();
        public static string DataFile = "data.txt";

        public static void GetPlayerName()
        {
            if (File.Exists(DataFile))
            {
                
                Name = File.ReadAllText(DataFile);
                Console.WriteLine("Welcome back " + Name + "!");
            }
            else
            {
                string name = "";
                Console.WriteLine("Please enter your name:");
                name = Console.ReadLine();
                File.WriteAllText(DataFile, name);
                Name = name;
            }

            
            Console.WriteLine("Press any key to continue...");
        }
    }
}

Program.cs

/*
 * [Your Title]
 * by Your Name, Date
 *  
 * This work is a derivative of 
 * "Explorable Areas I" 
 * by the Summer 2018 Introduction to Programming class (iam.colum.edu), used under CC BY.
 * https://creativecommons.org/licenses/by/4.0/
 * "[Your Game Title]" is licensed under
 * [license] by [Your name here].
 */
 
namespace ExplorableAreasI
{
    class Program
    {
        static void Main()
        {
            Game game = new Game();
        }
    }
}