Wario's Whack Attack
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Wario's Whack Attack was a browser game that was available to play on Mario Party's official website, which is now inactive. Along with Mario's Memory Madness, it is among the oldest Mario-related promotional games released by Nintendo. Wario's Whack Attack was built in Adobe Director and used the Adobe Shockwave 7.0 plug-in.
The player had to help Wario resolve a Piranha Plant infestation that was caused by Bowser. The gameplay resembled a generic whack-a-mole game where, using the mouse, Piranha Plants had to be hit as they popped out of the nine pipes on the screen. The goal was to advance through as many rounds as possible by hitting a certain amount of Piranha Plants per round within a time limit. For a round to finish, the player had to wait until the timer reached 0. Failing to meet the goal in a round resulted in a game over.
For every Piranha Plant that got hit, two coins would be added to a score. Along with Piranha Plants, multiple Bowser's heads would also repeatedly pop out of pipes and had to be avoided, as hitting them forced the player to restart the round; hitting three of them ended the game. Bowser's heads interfered more frequently as rounds passed.
In the game's introduction, Wario informed the player about the following, via a speech balloon:
Hi, I'm Wario!