Excavation is a small FPS game me and few other people are creating (Under Red Hammer team name). It is a total conversion high production quality (across the board) sci-fi single-player only mod/game built on the old GoldSrc/Half-Life 1 engine.
In short, the game takes place on Mars and you'll play as a SWAT equivalent operative attacking this smaller underground complex whose staff is trying to activate an alien multi-biosphere annihilator.
Here are few images to give you an idea of the game:
Here are few videos showing weapons progress:
Given it's a hobby project that will likely be free, it will probably take us few years to finish it, despite its short duration.
Upon finish we plan to release the mod's code and assets under an open-source license.
Thank you for your attention, let us know what you think.
Gojkovic