Here's a good tip on how to get extra performance in Linux. It's on the Ubuntu forums but is essentially an X.org trick.
Battle for Wesnoth 1.4rc1 (aka 1.3.18) is out - good preview of what is close to becoming the next stable release.
FreeOrion 0.3.8 is out. Another steady iteration that lays the groundwork for easier AI development.
NERO 2.0 released. This is currently freeware however the next version will be open source (2.0 uses Torque) which will make it a very interesting Free Software project indeed. "Neuro-Evolving Robotic Operatives, or NERO for short, is a unique computer game that lets you play with adapting intelligent agents hands-on. Evolve your own robot army by tuning their artificial brains for challenging tasks, then pit them against your friends' teams in online competitions!"
Project TTNA is a project, "to create a free (as in open source), crossplatform 3d game." What a delightfully simple goal. They are writing their own game engine, which seems a little superfluous given the myriad of Freely available game engines. Anyway, there's a long way to go with TTNA but the goal was so endearing, I just had to mention it.
Open Source representatives in mod-of-the-year awards 2007 on MODDB. It's one of those annoying pages that tries to make you watch a video you probably don't want to watch. Press 'next' (beneath the video) a couple of times to get to the results. Tremulous (#5), World of Padman (#4), and Warsow (#4) are the open source representatives while BSG: Beyond the Red Line (#1) is a standalone freeware game that uses the freespace2 source code project. Quite a domination and vindication that open source engines make a big difference to mods that would otherwise struggle to survive the changing times.
Two popular open source games that have gone a while without a release are close to release - Vega Strike 0.5.0 and Scourge 0.20 are imminent.
A quick thanks to everybody who submitted information for todays post, in comments and emails and the forum. This is probably the first time that most of the information was provided by others and I'm just putting it in a post. Perhaps one day Free Gamer can be evolved to be more community-driven but for now it's good to have people feed information because it means I can post even if I don't have much time to look things up.