This is only for those that own a iPhone/iPod/iPad. All you need to do is a free application called "The Heist".
This application contains 60 puzzles, if you finish all the puzzles you will win these 3 games.
Hurry up because they only have a certain amount of copies. Once you finished the game you'll receive 3 keys that can be activated on Steam.
The Heist iPhone/iPod Gameplay - The Game Trail
(You can also find a walkthrough on YouTube, if you get stuck.)
This application contains 60 puzzles, if you finish all the puzzles you will win these 3 games.
Hurry up because they only have a certain amount of copies. Once you finished the game you'll receive 3 keys that can be activated on Steam.
The Heist iPhone/iPod Gameplay - The Game Trail
(You can also find a walkthrough on YouTube, if you get stuck.)