The Big Weekend Instrument Hunt is now closed. Winners will be chosen at random and notified. Thanks you to everyone who entered and took part in the game.
Please read our competition rules.
More about the game
This week's Instrument Hunt is part of an ARG (Alternate Reality Game) called 'Frozen Indigo Angel'. An ARG is a multiplatform game in which the player follows a story and helps shape it by discovering clues and solving problems. Like 'Frozen Indigo Angel' there are usually prizes as incentives.
'Perplex City' is also a ARG. In fact it is massive one which has been running for a few years. In February Andy Darley walked in to a forest with a shovel and some clues and walked out with £100,000 having found a cube in the Perplex City game.
Radio 1 has been working with the people who run Perplex City to bring your our 'Frozen Indigo Angel' game.
Find out more about 'Perplex City' at perplexcity.com
If you still aren't sure what ARGs are have a look at the Wikipedia.org/ entry