I just played a space western total conversion mod. It took an entire day to finish.
So basically you're
this guy, serving as a Major in the gunmen army, and you will take a long space-train ride to the gunmen headquarters. Upon arriving, it doesn't take long for you to figure out that the entire gunmen army is actually composed of clones of a single man.
As a cloned trooper, you will be using all kinds of funky futuristic weaponry. You get to use some of the weapons in training, including a pistol with 4 fire modes, a shotgun with 12 firing modes, a machine gun whose barrel is shaped like a tuning fork, and a rocket launcher with alot of firing modes. And, like a certain hardass french mod, you get to drive an armored tank and run over your little enemy soldiers, akin to command and conquer.
So one fine day you and your fellow clones were sent to investigate some ancient mayan ruins. The planet looks friendly, with little crickets and butterflies and dinosaurs. Nothing unusual there.
And the next moment, some guys wearing 10-gallon hats want me dead.
Then, the dinosaurs want me dead.
Later, some robots want me dead.
And then, aliens want me dead.
Even the dam scientists want me dead.
I swear, everywhere I go something or another want me dead. You remember those cockroaches in vanilla? In here they are replaced with little scorpions, and they want me dead. But luckily I am protected by high quality body armour. You know, the ones that go 'automatic medical systems engaged'
The maps are large, and well made, but there is a bit of a problem, because the crafted world in this mod is so large. In most cases, you'll be wandering thru large underground facilities, and the scenes do get a bit monotonous. But there is plenty to see, since the storytelling is quite good and scripts are a-plenty. Just don't know why this mod didn't get as much attention as the Black Mesa ones. People should give this one a try, since the enemies are significantly harder to handle than your Xen aliens and your US marines.
And no, it has nothing to do with anime. Well maybe except that epic robot battle against a Protoss Immortal. Seriously I swear that happens in the game.