Sure! Here's a simple game in which you can walk around, collect keys, and open doors. The game is implemented as a single HTML file, contains JavaScript code enclosed in script tags, and can be played on a smartphone.
Key Collector Game
Here's how the game works:
- The game board is displayed as a 4x4 grid.
- You control the player character.
- The player character starts from the top-left tile.
- Keys and a closed door are randomly placed on the board.
- You can move the player character by clicking on adjacent tiles.
- When the player collects all the keys, the door opens.
- Clicking on the door before collecting all keys displays a message.
- Opening the door successfully triggers a win message.
Note: To play the game, copy the above code and save it with a ".html" extension. Open the file in a web browser, and you'll be able to play the game.