Here's an example of a 2D Russia roleplay game implemented as a single HTML file using JavaScript:
This is a basic template for a 2D game where you control a player represented by a blue square. Input from arrow keys on a smartphone (virtual or physical) is used to move the player around the canvas. The game loop updates the game state and redraws the canvas every frame. You can build upon this template to create a more complex Russia-themed roleplay game.