Sure! Here's an example of a game implementation that meets your requirements:
This is a simple implementation of the game, where you control a person who jumps over obstacles to collect money. When the person loses all 3 lives, they can use the collected money to upgrade themselves for the next round. There are 4 levels, each with a boss that can be defeated by chance when collecting a weapon. Once the player defeats the fourth boss, they have successfully saved the princess. The game runs in a loop, continuously updating the positions of objects, checking for collisions, and rendering the game.
Please keep in mind that this is a basic implementation, and you can further enhance and customize the game mechanics, graphics, and features based on your requirements.