Laser Tactics is the new name for Nuclear Graveyard. It's a turn based 3D squad tactics game, originally a remake of Laser Squad in 3D that has since transcended the initial goal of being a remake. The author is fairly frustrated at the lack of interest in the game because it doesn't fit the standard mold. If you want to try something a bit tactical and a bit different to the usual FPS or strategy style of game.
There were quite a few links in the last post with little description of them.
OpenFracas
Pathman
Asteroid Wars
OpenFracas is like an advanced version of Risk. What it actually is, is a rebirth of the game Fracas which was open sourced but is writtin in VB6, which is frankly a bit of a rubbish language for anything other than win32 forms.
There's a new development release of Oolite (announcement + Mac, Linux, Windows), the 3D space flight adventure game. I'd seen in many places concern that Oolite development was dead, so this is a delightful reminder that it is still going. It's definitely an underrated game, given the stature of Elite in gaming history and how much Oolite improves upon the original concept. The 1.70 release was actually at the start of December 2007 but, as is the case with many open source projects, it went beneath the radar for a while.
The OpenTTD community are putting together a basic free release for the low-res verison of OpenTTD so it can be included in Linux distros etc. Good to know that the game will no longer require non-free media. Anyhow, anybody interested in getting involved can find all the relevant info in the Graphics Replacement wiki page.
And finally two cool looking new Free games.
Pathman is, "a 3D first/third person re-interpretation of Namco's popular 1980's arcade hit Pac-Man, arguably the most popular computer game of all time." Not much more to say other than check it out if that sounds like your cup of tea.
Also cool looking, but unfortunately missing any kind of project page or cross-platform availability (Windows only) is Asteroid Wars, a snazzy take on another classic game. Perhaps somebody can convince the author to register over at Sourceforge and maybe somebody can make it run in Linux.