Monaco: What’s Yours Is Mine: http://store.steampowered.com/app/113020/Monaco_Whats_Yours_Is_Mine/
Right now there's a free game on Steam. This game is for a limited time completely free and for life, it is saved in your Steam library.
Free until September 8th at 10AM Pacific.
It is a very well-known 2D type, in which you will incarnate the character of delinquents and through strategy you will have to achieve the objective.
IN ADDITION TO THIS: Skyrim http://store.steampowered.com/app/489830/The_Elder_Scrolls_V_Skyrim_Special_Edition/
Only during these two days you can play Skyrim for free, but this offer can only be played during this weekend.