How is it already day 15 of our advent calendar giveaway? We've got no idea, but that's not going to stop us. The advent calendar, after all, is our chance to give back to you. Every day from now until Christmas you're going to be in with a chance to win a code for one of the very best mobile games of the last 12 months.

Today's entry is the awesome The Shapeshifting Detective. We've got 5 iOS codes to give out - sorry Android gamers, but we'll have more for you in the coming days. If you've not heard of the game, well you're in for an amazing treat.

It's an FMV noir-mystery that sees you trying to solve some heinous crimes. Nothing is ever quite what it seems though, which is exactly what you want in a noir mystery - everything is painted in really clever shades of grey, and it's up to you to pick your way through the evidence and get to the truth. Check out the trailer below and you'll get a better idea of what to expect.

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How do you win a copy of the game? Honestly it couldn't be easier. All you need to do is fill in some details in the form below and we'll pick a winner at the end of the day. Remember, this one is only for iOS gamers, but Android fans should definitely check back soon because we've got loads more codes to give away.

a Rafflecopter giveaway a Rafflecopter giveaway Make sure you come back to Pocket Gamer again tomorrow for another chance to win an amazing game in our advent calendar giveaway.