Another relatively straightforward deal, online download merchants GreenManGaming are offering a two for one deal on all of the games in their library. Yet to check out Introversion's back catalogue and get to grips with Uplink and Darwinia? No worries, you can buy one and get the other one for nothing.
It's not quite as simple as whacking two titles into your shopping basket and clicking on through, but it's still pretty foolproof. Just purchase a game and you'll be emailed a voucher to the value of the game you just bought, which can be redeemed against anything else the merchant has to offer. Simples.
While not boasting the largest library of games, we love BOGOF deals and this is no exception. Follow the address above and see if there's anything on the site that floats your collective boats.