RuneScape is about to turn 18! To celebrate this dawning of adulthood, head over to Treasure Hunter from 00:00 on January 3rd 2019 to 23:59 on January 7th, grab a sparkler and enjoy the spectacular Firework Festival!In recognition of this entirely unique occasion, there will also be some very special one-off prizes!Players will have four fireworks to choose from. Each has its own effect, from guaranteed purple prizes to 4x multipliers. There's also a special mystery firework...Here’s what’s up for grabs:Firework Type Effect Skill A Skill Prize Red Red Prize Purple Purple Prize Double 2x Prizes Triple 3x Prizes Quadruple 4x Prizes Mystery Has a chance to give the effect of any other firework and the possibility of up to an 8x Prize