Super Mario Strikers -- Heads Up, parsed in-game as Heads-Up, was an online Flash advergame published by Nintendo around the release of Super Mario Strikers for the Nintendo GameCube. It was listed in the Nintendo Arcade, a now defunct section with web games on Nintendo's website.
The object is to bounce a soccer ball on Mario's head for as long as possible. He can be moved around the screen with the left and right arrow keys. Often, character icons appear in random locations above Mario and can be collected by bouncing the ball into them to obtain points for a score. Mushrooms and Blue Shells also spawn regularly and can be collected with Mario to change his speed temporarily: Mushrooms speed him up, while Blue Shells cause him to slow down. The item that is currently taking effect is displayed on the top-left corner of the screen.
When a character icon appears, a voice clip of that character is heard. The number of points awarded by an icon depends on the character depicted on it. In order from least to most valuable, these are:
The current score and the overall high score are shown at the bottom of the screen. The game is over when the player fails to catch the ball. The game over screen offers the option to either replay the game or visit the official website for Super Mario Strikers.
The Palace arena is always seen in the background during the game.