Sure, here's an example of a farm game with mini games to expand your land and crops. Please note that this is a simplified version and may require additional features and improvements for a complete game. You can copy this code into the HTML file and save it as a .html extension.
In this game, the user starts with an initial land size of 10 units and 0 crops. They are prompted to play a mini game to expand their land by 5 units. If they win the mini game, their land size is increased, and if they lose, nothing happens. Later, they are prompted to harvest their crops, where they can harvest half of their land size. The final land size and the total crops harvested are displayed at the end of the game.