There's a new big remake effort a-brewing in the Free Software world, this time for prominent shooter/RPG, System Shock. under the shape of project Citadel. According to project description, the goal is to recreate the original game using the widely known GPLed platform Darkplaces Engine, upgrading the game's graphics to full 3D but keeping game aesthetics close to the origianl game. Added modding capabilities and cooperative multiplayer will also be a part of the project.
Details, however, are somewhat scarce, so far, as development is happening behind closed doors, and creator Josiah Jack just announced the existence of the project itself after months of programming in secret. While the code will certainly be all GPL or GPL-compatible due to Darkplaces licensing requirements, the game appears to rely on original proprietary assets, as well as using its own whose license nature is yet to be disclosed.
With a release date planned for the the 23rd of December, System Shock's CD release anniversary, I guess we'll have to wait and see if this project will deliver.