We Bare Bears

We Bare Bears was a developer-made sponsored event, held in Hide and Seek Extreme. This event was sponsored by the Cartoon Network show with the same name. In it players could win one item, "Panda's Cellphone". Players could also buy one item called the "We Bear Bears Bearstack". It started on July 20, 2015, and ended on August 21, 2015.

Description
Cartoon Network's We Bare Bears is a new series about three brothers trying to fit in and make friends...which can be kinda hard to do when you're a bear. Especially not when their backpack – containing all Grizzly, Panda, and Ice Bear's favorite stuff – has gone missing! It's lost somewhere in Hide and Seek Extreme, and the bears need you to help them find it! They want their stuff back so bad, Panda offered his most prized possession as a reward – his cell phone! Don't miss We Bare Bears premiering July 27 on Cartoon Network! This was the game that was in the event.

Links

 * https://web.archive.org/web/20150723041422/www.roblox.com/sponsored/WeBareBears
 * https://blog.roblox.com/2015/07/we-bare-bears-bearstack-onto-roblox/
 * https://twitter.com/roblox/status/623182024547762177

Trivia

 * Not only could you find the bear's yellow backpack and obtain Panda's Cellphone in Hide and Seek Extreme, but you could've also have bought exclusive tagger skins of each bear from We Bare Bears in-game. Each bear has their own unique abilities, Ice Bear for example can trap hiders in sticky glue. (the creator of the game) forgot to remove these tagger skins when the sponsor ended, meaning you can still purchase these in-game skins to this day.