[PC] Free: Into The Breach (U.P. US$14.99) @ Epic Games
Into the Breach is being offered free for the next several days
Control powerful mechs from the future to defeat an alien threat. Each attempt to save the world presents a new randomly generated challenge in this turn-based strategy game from the makers of FTL.
Note: This has been given away by Epic before so you might already have it in your account.
via Lysander at OzBargain