User Story

As a player, I want to see a short description of the Snake game before it starts so that I understand the rules and goals.

Acceptance Criteria

When the game starts, the description is printed before any prompts or game logic.
The game proceeds normally after the description.

Details

Modify the game to display a brief introduction before gameplay starts.

This should be shown once when the player chooses the game from the launcher.

Keep the description to 2–3 lines and focused only on gameplay, not implementation rules.