The Stadium Games "tied-in" with the Club Penguin: Game Day! release for the Nintendo Wii. Although the point of the Wii game is to "conquer the Island", the Stadium Games only took place in the Stadium.
Until The EPF Rebuild event in 2013, it used to be the longest event ever. Lasting for 2 months and 20 days, ranging from the start of fall (in northern hemisphere) to the end of fall.
There was a big glitch in the Stadium, that about 10 error messages about Adobe Flash Player would pop up, and when you close all the error messages, the screen will freeze (for example, if you are walking, it would be like you are running at the same place), most dancing penguins would become Old Bluepenguins and making dancing moves that are a "hybrid" between break-dancing and normal dancing. This glitch was later fixed.