These are the games you can play for free on Xbox Live Gold this month

Prison Architect and LEGO Star Wars lead August's freebies

What does an Xbox Live Gold membership grant you? Free games. Loads and loads of free games.

Each and every month you'll find a handful of gratis games to download on Xbox One, as well as a couple for Xbox 360, and they're yours to keep so long as you keep paying for the subscription. However, there is one catch to the Games with Gold promotion: they're only available to download for a few weeks apiece, and then you won't find them free again.

Luckily, we've got you covered: these are the free Xbox Live Gold games that are available in September 2018, across both consoles, and we'll keep this space updated with each month's new picks. And if you still haven't snagged August's free games, then you'll find those listed at the bottom. Hurry!

On Xbox Live Gold in September 2018

Prison Architect (XB1)

Incarceration is no joke, but Prison Architect has a bit of fun with it all the same. You'll build up and try to maintain your ideal lockup – albeit one that nobody wants to stay in. Obviously, that causes a few problems along the way. Enjoy! It's free throughout September.

For Honor (XB1)

We weren't too hot on this medieval fighter when it launched, but like some of Ubisoft's other recent titles, For Honor has been gradually improved – and it boasts a die-hard community. And now that it'll be free from 16 August through 15 September, you can grab your battle axe and give it a shot.

Livelock (XB1)

Livelock's artwork makes it look like a second cousin of Destiny, but rather than a vast, shared-world shooter, this top-down blaster aims for more arcade-like thrills. It looks like simple, straightforward fun, and is surely best enjoyed in the three-player co-op mode. Grab it between 16 September and 15 October.

LEGO Star Wars III: The Clone Wars (XB1/360)

While the Star Wars prequel films are almost universally reviled, The Clone Wars animated series has its fans – and LEGO Star Wars III pairs the characters and scenarios from that cartoon favorite with the familiar button-mashing action of the game series. It's free from 1-15 September.

Sega Vintage Collection: Monster World (XB1/360)

Not to be confused with this year's brilliant Monster Hunter: World, Sega's Monster World collection brings together a trio of Master System/Mega Drive platform games (also known as Wonder Boy). This one's available between 16-30 September.

Still available in August 2018

It's not September yet... at least not as of this writing. If the calendar page hasn't dropped yet, then be sure to grab these free games before August ends.

Forza Horizon 2 (XB1)

It's a few years old at this point, and Forza Horizon 4 arrives this autumn – but if you haven't played the great Forza Horizon 2, now's the time to jump on this wild open-road racer and cruise across the Franco-Italian countryside while completing speedy festival challenges. This one's free throughout August.

Epic Mickey 2: The Power of Two (XB1/360)

And lastly, something for the young – or at least the young of heart. Epic Mickey 2 is a 3D platform game that pairs a magic paintbrush-wielding Mickey with forgotten Disney mascot Oswald for a suitably Epic adventure. Reviews weren't great, but at least the concept is charming. This one's free from 16 August through the end of the month.