Ubisoft have announced that the PC version of Far Cry 3 will have to be activated through Uplay upon purchase, which means you’ll need an internet connection to get the game running. After activating the game though, you’ll be able to go offline and play without the hassle of your internet connection (unless you want to play online and make use of online features like Friends, Party and Chat).
Ubisoft have also released the system requirements for the game.
DirectX9c graphics card with 512MB Video RAM
Dual core CPU
Example minimum 1 (NVidia/Intel)
Intel Core2 Duo E6700
Example minimum 2 (AMD)
AMD Radeon HD2900
AMD Athlon64 X2 6000+
DirectX11 graphics card with 1024MB Video RAM
Quad core CPU
Example recommended 1 (NVidia/Intel)
Intel Core i3-530
Example recommended 2 (AMD)
AMD Radeon HD5770
AMD Phenom II X2 565
Latest DirectX11 graphics card
Latest quad core CPU
Example hi-performance (NVidia/Intel)
Intel Core i7-2600K
Example hi-performance (AMD)
AMD Radeon HD7970
AMD Bulldozer FX4150
Get your systems ready, Far Cry 3 is set to release on December 4th in North America, November 29th in Europe and Australia, and November 30th in the UK.