Invasion will be a single-player mod for HL1 that puts you in the role of Sam Novak, a college student living in the suburbs outside of an un-named city. It will be a part of the Half-Life storyline, taking place between HL1 & 2. It will consist of three parts: The Portal Storms, The 7 Hour War, and Rise of The Overwatch.
Basically, it will show the player everything Gordon missed: how the Xen creatures got to Earth, the arrival of the Combine, and the eventual enslavement of humanity.
Some features planned for the mod:
-Custom textures throughout.
-Completely new monsters and AI, in addition to select HL and Op4 aliens.
-Brand-new soundtrack, and all new game sounds.
-Completely new HUD.
-All new weapons.
While still being very action-orientated, it won't be a simple gruntfest. Puzzles and storyline will also play a very large part of the game.
I've been working on this idea for close to a month now, and I think it's finally at the point where I can begin to create the custom materials. I've got so many great gameplay moments in my head, I can't wait to get started on the level design. But, I'd like to have everything else in place before I start in on that. So...
When all the storyline details are completed, I'll be in need of voice actors. But that won't be for some time.
Also, I need (at least) two more people: a coder, and someone who can help create the weapon models. And if anyone else would like to contribute anything at all, please feel free to contact me.
So, what do you guys think?