A digital Grand Theft Auto 6 pre-order comes with a free month of GTA+The subscription service offers access to GTA Online benefits and the ability to play older GTA gamesHere's everything you need to know about the serviceIf you place a GTA 6 pre-order on a digital storefront for PlayStation 5 or Xbox Series X and Series S, you immediately get access to a free month of GTA+. But what exactly is it, and how should you use it? Here's what you need to know.What actually is GTA+?(Image credit: Rockstar Games)GTA+ is Rockstar's subscription service, primarily intended for the most devoted GTA Online players.It gives you access to a load of benefits in the multiplayer game, including a monthly $500,000 in-game cash injection, a 15% bonus when you buy Shark Cards (the game's currency gift cards), and reward multipliers in certain missions.You also get access to The Vinewood Car Club, where you can claim a free vehicle or modify your existing collection in its exclusive workshop. The Car Club also boasts a 100-car garage for you to use.This is on top of monthly drops that include exclusive liveries, special paint jobs, and unique clothing. Other smaller benefits include free taxi rides in-game, access to a discounted gun store, the ability to bribe the police to reduce your wanted level, and some other additional features.These are some fantastic benefits if you're a big GTA Online player, but GTA+ does also have something to offer with its game library... @techradar ♬ original sound - TechRadar Which games does GTA+ include?(Image credit: Rockstar)Alongside its GTA Online benefits, GTA+ includes access to a range of Rockstar Games title. The selection changes on a regular basis, but right now the following GTA games can be played:Grand Theft Auto 5 (PS5, Series X / S, PC)Grand Theft Auto Online (PS5, Series X / S)Grand Theft Auto: The Trilogy – The Definitive Edition (PS5/PS4, Xbox, PC)Grand Theft Auto: Vice City - The Definitive Edition (Android, iOS)Grand Theft Auto 3 - The Definitive Edition (Android, iOS)Grand Theft Auto: Liberty City Stories (Android, iOS)Grand Theft Auto: Chinatown Wars (Android, iOS)That's not everything, though, as there are some titles from other series included too:Bully (PS5/PS4, Xbox, PC, Android, iOS)Red Dead Redemption (PS5/PS4, Xbox, PC)L.A. Noire (PS5/PS4, Xbox, PC)As you can see, the games are available on a wide range of platforms, with some even available for mobile devices.Out of all the games here, I would recommend checking out Vice City the most ahead of GTA 6, either as part of Grand Theft Auto: The Trilogy – The Definitive Edition or its standalone The Definitive Edition version.With GTA 6 set to take place in the same fictional city, it's likely going to offer important context and should get you up to speed ahead of the new game.How much does GTA+ usually cost?(Image credit: Rockstar)One month of GTA+ usually costs $9.99 / £6.99 / A$11.95 per month.If you do make use of the free month, remember to cancel the auto-renewal unless you wish to continue your subscription at those rates.