A small addition multiplayer game script for a membership website is needed

I have a membership website. i want a small addition multiplayer game script for my membership website once members login, they should press a button to play the game. two random integers should be generated and displayed (looking flashy). then members compete or play alone. their scores will be carried to the hall of fame. it should allow them to play 10 games. Program should be simple but should be flashy. i have mysql webserver. php supported.