The latest Humble Weekly Bundle is all about Iceberg Interactive, the brave if somewhat inconsistent publisher who'll take a punt on practically anything involving space and 4X. You can get Nuclear Dawn, The Lost Crown, Star Ruler and Blades Of Time in the pay what you want tier, but beating the average throws Gas Guzzlers Extreme, StarDrive and Horizon into the bargain.
I've linked to our reviews, and I'd also highly recommend Starpoint Gemini 2, a great RPG/space sim hybrid that I need to get around to reviewing at some point. It can be yours in the £15.91 tier. It costs £26.99 on Steam, so well worth a punt if you can't wait for the Steam Christmas sale (which is tipped for the 16th). Thanks to BuzzDuraband @ HUKD!