Sure! Here's an example of a simple game that meets your requirements:
This game is called "Zombie Escape". The objective of the game is to avoid the zombie (represented by a red square) by moving the player (represented by a green square) using the arrow keys on your smartphone. The game ends if the player collides with the zombie, and a "Game Over" alert is shown.
Please note that the gameplay might not be ideal on a smartphone due to the use of arrow keys. It's recommended to run the game on a computer for a better experience.