Sure, here's an example of a simplified version of Monopoly using JavaScript within a single HTML file:
Monopoly V2 - Just For Fun Game
This code sets up a basic Monopoly game. Each cell on the board is represented by an array, and the player's position is kept track of using a variable. The board is rendered using the `renderBoard` function, and the player can move by pressing the arrow keys on their smartphone. The player's position is updated in the `movePlayer` function, and the board is re-rendered after each move.
Please note that this is a very basic implementation of the game and does not include features such as property ownership, rent, or game logic. It is just a simple example to get you started. Feel free to modify and enhance it according to your needs.