Okay, so since i've been on an Alternate History Binge lately, I thought I'd finally post up a little baby of mine.
Triassica
Theme: There is an Old Western Settlement founded around a "lost world" in the Montana territory where Dinosaurs survived the extinction. These settlers tame the beasts, and become a formidable people. They take most of the Northwest, including chunks of Idaho, Eastern Washington, and western Montana. The territory of Triassica is formed.
System: Pathfinder, E3
Races: Human
Classes: Gunslinger, Nonmagical Ranger, Gearhead, Some others as I see fit.
Monsters: Dinosaurs
Conflicts: Bandits, territory disputes, Native tribes, rogue Dinosaurs
So yeah, that's pretty much the setting. "Tombstone meets Jules Verne meets Jurassic Park" The system parts are pretty self explanatory. Just use the Pathfinder system as is, cut out some classes, humans only, dinosaurs, and there you have it. I'm keeping them at level 3 just so that it stays gritty, and Trex stays Trex.
So I plan on expanding this. Just wanted to contribute something to the Finals Week Recovery Plan.