If you're thinking of picking up a PS Vita this festive season, then Sony has come up with a plan to sweeten the deal a little.

Purchase one of Sony's powerhouse portables, link it to your Sony Entertainment Network account before the end of the year, and you'll get a month of PS Plus for nothing.

And if you're already a PS Plus member, that extra month will be added on to your current subscription.

With PS Plus, you get access to a library of free games to download and play for as long as you stay subscribed. The roster of PS Plus titles changes every month.

On top of all that, if you link your Vita to an SEN account, you will be in with a chance of winning a PS4.