Sure, here's a simple HTML game that allows the player to stop time. It uses JavaScript and is ready to be played on a smartphone.
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In this game, you will see a single large pictogram representing the play button (`⏸`). By tapping on it, the player can stop or resume time represented by changing the pictogram to pause (`⏸`) or play (`▶️`) button respectively.
The game loop runs continuously, checking whether time is stopped or not. If time is not stopped, you can update the game logic and render the game state accordingly. If time is stopped, the game logic and rendering will be paused until the player resumes time.
Please note that this is a very basic example, and you can expand upon it by adding more game elements, levels, and interactions based on your requirements.