The game, set up by a Dutch website, sees players as Harry trying to avoid being photographed in the nude by half-naked girls and hotel staff.
If users get caught on camera, they lose the game and the pictures find their way onto the front covers of newspapers.
Players can build up points throughout the game if they collect items from each level, which they can also use to cover the prince's 'crown jewels'.
His father Prince Charles also makes an appearance and in the final round Harry must avoid having his photo taken when in front of a battalion of soldiers.
> Fish play video games in new study
> 'Breaking Bad' RPG video game - watch
Prince Harry's wild antics so far:
Copyright: Rex Features Paul Grover/Rex Features