Steam doesn't just have Cities in Motion stuff on sale this weekend. There's also a massive sale on all Dead Island content, including the new Riptide game. You can get Dead Island: Game of the Year Edition for $5, which is the same price the Brady PDF guide goes for as well. Unfortunately, there's no bundle for both that shaves some cost, but both can be yours for $20. Dead Island Riptide and all of its DLC are 50% off, which takes the game itself down to $20 and the DLC down to $3.50 for both pieces. While Riptide was knocked as a full-price game, it seems like a perfect pickup at $20 or so, and if you've got a powerful enough set up to run it, give this sale a shot.