Minecraft wiki entry for Mini_games, associated text: The time-limited Halloween Arena was introduced in TU58 and equivalent updates, which adds specially-themed layers and uses the Halloween 2015 Mash-Up Pack. Around Halloween the arena becomes Halloween themed.
The Festive Arena was introduced in TU60 and equivalent updates. Around Christmas time the arena and the layers change to a festive theme.
An Xbox 360 Edition exclusive event was held in 2018 to celebrate the version's 6th birthday. The Cartoon Texture Pack was used.
Around May 9 (Xbox 360 Edition's release date) the arena and layers are birthday themed.