When you play the upcoming Thief, you'll be able to complement your game with a companion app that will help you immerse yourself into the world.
The companion app will give information like personal stats, a bigger insight on the background story, as well as notes. It will also contain leaderboards as well as gorgeous art work.
The Lite version will come with all of thi as well as Wiki information which will be updated by IGN. If you pre-order the game from Gamestop, you'll get access to the full version, soundtrack and special access to the Bank Heist mission.
Thief comes out in February.