Sure! Here's a simple text-based RPG game called "Necromancer RPG" implemented as a single HTML file using JavaScript:
This HTML file contains JavaScript code enclosed in `
` tags. The game starts by calling the `startGame()` function, which prompts the player to enter their name and choose a class. The player character is then initialized and the main menu is displayed.
The main menu offers options to explore, visit a shop, level up, or quit the game. Each option leads to a respective function (`explore()`, `shop()`, `levelUp()`, `quitGame()`) where you can implement the desired game logic. For simplicity, I have provided some placeholder alerts indicating the different game sections.
Feel free to customize and enhance this game further with your own RPG mechanics, battles, inventory systems, and so on using JavaScript.