2011 April Fools

The 2011 April fools joke was a fake Behind the Scenes article (seen here). It listed a Distraction and Diversion called "TzHaar Hero", a Hunter update for hunting werewolves and vampires, a quest called "Gertrude’s Cataclysm", and the ability to summon unicorns. However, at the end of the article Jagex stated that the behind the scenes was in fact an April fools joke, and the real behind the scenes would follow later on that day.

Trivia

TzHaar Hero

• TzHaar Hero is a reference to the musical gaming series Guitar Hero. "TzHaar power" is a reference to "Star Power", a powerup obtainable in Guitar Hero.
• "TzTok-El-Slash" is a reference to Slash, the former lead guitarist of Guns N' Roses and current lead guitarist of Velvet Revolver.
• "[A]nd play solos so hot even carbonite couldn't freeze them" is a reference to Star Wars, where Han Solo gets frozen in carbonite.
• Some songs involved in TzHaar hero include Magma Mae (a reference to Maggie May), Is This The Way To Armadillo? (a reference to (Is This the Way to) Amarillo), Gielinor Rigby (a reference to Eleanor Rigby), Great Capes of Fire (a reference to Great Balls of Fire) and I’d Do Anything For Love (But I Won’t Do Jad) (a reference to I'd Do Anything for Love (But I Won't Do That)).

Werewolf and Vampire Hunting

• "[T]he moon on a stick" is a reference to an American idiom the moon on a stick.
• "Love triangle", "twi-fight", "Team Drakan!" are references to events in the popular teenage vampire series The Twilight Saga, and hunting werewolves and vampires, and a "Van helping of fun" are references to the movie Abraham Van Helsing.
• "Love triangle" is a reference to triangular theory of love.
• "[A]ctivate their combat buff(y)s" is a reference to an American supernatural drama television series Buffy the Vampire Slayer.

Gertrude's Cataclysm

• Gertrude's Cataclysm is a reference to the quest Gertrude's Cat.
• Gertrude's Cataclysm, Deathpaw, and "it literally topples buildings and lays waste to Varrock" are a reference to the expansion World of Warcraft: Cataclysm and the main antagonist Deathwing of the expansion in World of Warcraft.
• The renaming of "Blood Pact" to "Tigerblood Pact" is a reference to the recent trending phrase inadvertently created by the real life celebrity Charlie Sheen.
• Tigerblood and Deathpaw is a reference to the popular book series "Warriors" by Erin Hunter.

Little Pwny Unicorns

• The "little pwny unicorns" is a reference to the "My Little Pony" brand of toys, and the word "pwn".
• "Using a mixture of sugar charms, spice shards and bloody unicorn parts" is a reference to What Are Little Boys Made Of?.

In Other News

• The Jagex store was set to be stocked up with "Gower Ranger" action figures. This is a reference to the creators of RuneScape, Andrew, Paul, and Ian Gower and the show Power Rangers.
• "Fire these agitated birds to see if you can hit Pigzilla in Draynor Market and contribute to your team’s score." is a reference to the popular mobile game Angry Birds.
• "Sailing" was mentioned, as a reference to the highly-anticipated skill, Sailing.
• The default "wear" option of partyhats was to be changed to "tear", making the player lose the partyhat.
• The "clipping issues" of "the Emperor's New Clothes" is a reference to a classical story, the Emperor's New Clothes.