Rules that players need to remember when playing “Ultimate Ninja” include not letting the enemy see the on-screen ninja and clearing a path for him to reach the other side of the screen safely. “Ultimate Ninja” is a free online Flash game that is available to play on Y8.com as of 2015.
In “Ultimate Ninja,” the player uses a computer mouse to interact with objects and the onscreen ninja; the objects are outlined in yellow when the player hovers the mouse over them. Clicking on the ninja makes him start walking. Players have no control over the ninja once he's motion. Clearing a path for the ninja involves puzzle solving and perfect timing.
Enemies in the game shoot guns if they see the ninja coming. It's up to the players to time the ninja's approach so that he reaches the bad guy when his back is turned. Players can sometimes eliminate enemies on the screen using objects. For example, there is an elevator on stage two that they can click on to lower one of the on-screen enemies into the water and out of sight.
“Ultimate Ninja” is about an evil organization that has kidnapped the daughter of the leader of a Japanese ninja clan. Players take control of a brave ninja who vowed to rescue the leader's daughter and restore peace to his clan.