Sure! Here's an example of a simple game called "Jump Dave on the Block" implemented as a single HTML file using JavaScript:
Jump Dave on the Block
In this game, the player controls a character named "Dave" using the spacebar to make him jump. The objective is to avoid collision with a moving block by timing Dave's jumps correctly. The game keeps track of the score and displays a game over message when a collision occurs. The score is continually incremented as the player successfully avoids the block.
Note: This is a basic implementation of the game. You can modify and enhance it as per your specific requirements and add pictograms or additional features to make it more visually appealing or challenging.