Unvanquished is an open-source FPS game featuring team-based strategy and RTS elements, pitting humans against aliens in a futuristic setting.
https://forums.unvanquished.net/
I think humans have forgotten something...
This is a technology:
This is also a technology:
And so is this:
I think making humans less forgetful will make the game more atmospheric than any gloomy foggy graphics might ever hope to.
A lot of those, i would rather see be a part of the environment rather than deployables. Maybe in the future we can toy with such ideas such as creating difficult topology for aliens to traverse and ladders/ramps/etc.