A new humble weekly sale is out, and it focuses on co-op gaming in both local and online forms. You can pay what you want for Awesomenauts, Sanctum 2, and Wanderlust: Rebirth. Paying $6 or more gets you Rocketbirds: Hardboiled Chicken, Orcs Must Die! 2 Complete, and Aces Wild: Manic Brawling Action, while paying $10 gets you all of those and Risk of Rain. This bundle gives you a mix of platforming MOBA action, a tower defense/FPS hybrid, a beat-em-up combo-heavy game, and even an action RPG if you spend $6. Risk of Rain is an action-platformer blended with a roguelite and a pixel artstyle. It seems fun, but not quite enough to warrant the $10 tier unless the trailer blows you away. Everything here unlocks on Steam, with three of the games being available in DRM-free forms as well.