Brigand: OaxacaA highly-difficult old-school FPS/RPG set in post-apocalyptic Mexico
Steam page:
http://store.steampowered.com/app/652410/Brigand_Oaxaca/
Gameplay Video:
https://www.youtube.com/watch?v=hYK5w9CsnsM&t=31s
Brigand is a highly-challenging FPS/RPG set in post-apocalyptic Mexico, where you can travel from a banana plantation, to a sprawling city, demon-infested jungles, a flooded coastline, and more, all of which will take around 80 hours to complete. There are 14 skills to upgrade and 80 abilities to unlock.
What sets this game apart, however, is the complex story and freedom of action. There are no invisible walls, and you can steal anything and kill anybody. The story branches off in countless directions involving unique characters that are just as vulnerable as any baddie, allowing for maximum replayability.
There is also a world editor, allowing players to make user-generated content like mods or completely new stories.
Download the free demo on Steam or purchase the full version for just $5.99.