Sure! Here's a simplified version of a Mario game that you can play in a smartphone browser:
Save the code above to a file with an `.html` extension (e.g., `mario_game.html`) and open it in a smartphone browser. You'll be able to control Mario by tapping the left or right side of the screen to move and tapping anywhere on the screen to make Mario jump. The game will end if Mario collides with a goomba.