How to buy a PlayStation 4 20th Anniversary Edition console

Want to buy one of those sweet PS4 20th Anniversary Editions online this week? Follow these instructions.

Sony begins selling the limited edition consoles this week online for a short time only. If you want one, you'll have to do a bit of fannying about.

First, follow @GAMEDigital or @PlayStationUK on Twitter.

From 11am GMT visit this official Sony website and check out all the different characters.

Both Sony and GAME will tweet a clue each day this week. You then have to solve it and click on the right character to be taken to a GAME website.

Fill in the form and if you're one of the first 100 to do so you will have the privilege of paying £399.99 for a grey games console.

If you're not one of the first 100 you will be entered into a prize draw and might get lucky that way.

You have five opportunities to get involved, with clues being tweeted at the following times.

Monday 4pm
Tuesday 5pm
Wednesday 2pm
Thursday 8am
Friday 12pm

And you need to live in the UK too. What a fun process!