If watching a traditional Christmas film or taking part in Elf on the Shelf is already getting the kids mega excited in the buildup to Christmas day, you probably won't want to imagine how they would act if they saw a reindeer in their home.
The app is available to download on the McDonald's Reindeer Ready Hub - though you will need to visit it on your phone or tablet, as the technology does not work on desktop.
Once comfortable in your armchair - though you can pick any room - all you do is take a picture of the area you want the reindeers to appear.
All you then have to do is wait for the reindeer to appear to eat its treats, and then the magic well and truly begins.
You'll also be able to choose which way you want to position your reindeer by using the 'flip the reindeer' option.
All you have to do then is agree to the T&Cs, wait 30 seconds for the video to process, and before you know it you've got a pet reindeer chilling next to the dog in your front lounge.
The reindeer app is available from McDonald's until Christmas day.
It is not the only thing the fast-food giant is doing to get into this festive spirit this year.
They are also in the UK introducing the limited edition 'Reindeer Treats' available for 99p, with the idea you leave it out for Santa Claus on Christmas eve.
McDonald's have also teamed up with ex-footballer Jamie Redknapp for a Christmas audio book.
Redknapp narrates The Perfect Christmas List, which follows a lad called Alfie who realises the best thing on his Christmas list is spending time with his family.
Redknapp said: "As a dad, I know how hard it can be getting everyone in the car at Christmas, but spending time with the family, wherever we are, is the most important part of the holiday for me, and anything we can enjoy together is always welcome.
"I hope the McDonald’s festive audiobook brings a few smiles on those long drives coming up."
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