Rockstar Games' Grand Theft Auto 5 will finally arrive next week, but plenty of eyes are already focusing on the online mutiplayer component Grand Theft Auto Online. We didn't know a whole lot about the online mode before, but new details have surfaced giving us a clearer idea of what to expect when it arrives in October.

In a new in-depth article in the next issue of Game Informer (uncovered by CVG), Rockstar spills almost all of the beans about Grand Theft Auto Online. The mode will unlock on Oct. 2, a few weeks after GTA5 arrives, to give people time to immerse themselves in the regular story before getting lost in the seemingly never-ending amount of adventures to have online with friends.

There will be some 500 missions in GTA Online, and you'll be able to complete a decent amount on your own, however, most will require a team to tackle. Nearly every activity from the main game will be available online including heists, playing golf, robberies, base jumping and more. The Online mode takes place after the conclusion of the story, so some familiar characters will reappear.

The world will be populated by you and your friends first, followed by similarly skilled players being added dynamically. Player creation revolves around choosing a set of parents and lifestyles, which then impacts your starting skills. While there is a progression system in place, there is no real conclusion to the online mode. The game is all about accruing wealth and power, but players can kill you and take your money. That's why it's apparently key to make regular deposits at an ATM to keep your cash flow safe.

You can read more about it in this month's issue of Game Informer, or just wait until the mode opens up next month if you don't want it spoiled. Grand Theft Auto 5 will be available on the PlayStation 3 and Xbox 360 on Sept. 17.