"Damn Free Gamer is popular." So says the L-echo developer, as well as posting graphic illustration on the project home page. L-Echo is a free and open source clone of the game Echochrome (aka Mugen Kairou). Version 0.4.3 arrived in early February, although performance was unplayable on my non-hardware-accelerated laptop.
Freedroid RPG version 0.12rc1 - a 2D isometric RPG, a bit like Diablo, but not like it at all. There's lots of bug fixes, a new tutorial, a new starting level, lua scripting, and more! Help them playtest it so that version 0.12 is solid.
"Tesliz", a 3D turn based strategy game, inspired by Wesnoth, written in Python on top of OGRE. Early days here.
Speaking of Wesnoth had lots of updates over the Christmas period, building up to a stable 1.6 release. That game has some amazing artwork these days, like these wizard portaits. They have lots of playtesters already. If you don't know what Wesnoth is, crikey, just click the link already.
Globulation 2 version 0.9.4 (changelog) which is a lot of balancing, bug fixing and enhancement of existing features, from what I can tell. Globulation 2 is an innovative 2D RTS where you lead autonomous blobs into battle. Innovative, yah. Blobs, meh.
Java Classic RPG version 2009-02-28 (announcement) which has a rather large amount of changes since the previous release. Highlights include moving to jMonkeyEngine 2.0, new monsters, area dependent music playback, new portraits, and optimizations. I hope to see this project become a completable game this year.
Freelords tech release 0.03 is out. Freelords is a Warlords-inspired 2D strategy game written in Java. This release introduces simultaneous movement and improves the graphics and dialogs. Freelords was originally a C++ project - the C++ codebase lives on in LordsAWar. Recently the developer posted a video of a city history report (ogg) on the LordsAWar homepage, which I thought was quite neat. It's the kind of feature usually missing from Free games.
Tennix 1.0 is available. Tennix is a very simple pong-like Tennis game, but the amount of polish going into it shows how nice a simple game can become. All it takes is a little passion.
Gearhead2 version 0.540 (announcement) continues the spate of game rule adjustments. I like it that there's a lot of thought going into giving the game depth.