This week's Humble Bundle focuses on surprise attacks. The pay what you want tier gets you Obscura: Lost Light, Metrocide, and OTTD. Each is DRM-free and includes a Steam key. For $6 or more, you get A Druid's Duel, Particulars, and Robocraft Pack (in early access). $12 or more gets you all of that alongside Vertiginous Golf and a two-pack of Screencheat.

This bundle gets a mix of puzzle-platforming, non-stop action, and more strategic games as well. Depending on the games that interest you here, check out that particular tier. The pay what you want tier is fantastic, and might be the best option for those on the fence about this.