To mark the occasion, we have 20 download codes to give away - and one lucky reader will blag some cool Call of Duty merch too, including a hoody and T-shirt.

There are only merch codes available for Pet Simulator 99! currently. It's also worth nothing you can only redeem codes when using a desktop. If you do have a merch code, follow these steps to ...

The code will also give customers a chance to win free food, My McDonald’s Rewards points, and merch! Codes are MULTI-USE – as many people as desired can enter the same code into the app.