Dogs in the Vineyard (Western frontier justice among the faithful)
My Life With Master (minions of a mad scientist explore love and hope)
Trollbabe (big hair, big horns, badass lady adventurers)
Cthulhu Dark (super simple and smart system for Lovecraftian horror)
Unknown Armies (modern occult action/intrigue)
InSpectres (it's Ghostbusters)
Into the Odd (possibly my favorite 'dungeon adventure' game)
Zenobia (old-school adventures in the ancient world)
Murderous Ghosts (modern survival horror)
Sagas of the Icelanders (brilliant historical roleplaying)
Shooting the Moon (love-triangle fun a la The Philadelphia Story)
Thou Art But a Warrior (collapse of empire in Moorish Spain)
Lady Blackbird (steampunk + Firefly-esque romantic adventure)
Sundered Land (mini-rpgs for fantasy anthology storytelling plus a great tutorial for RPG design)
The Quiet Year (community and survival in the apocalypse)
Psi-Run (supers on the run from govt agents)
Burning Wheel (gritty, personal fantasy adventure)
Dungeon World (epic fantasy adventure)
Stars Without Number (sandbox sci-fi adventure)
Bootleggers (prohibition-era gangsters)
Poison'd (pirates, but without the gloss of heroism. can go to dark places)
Bliss Stage (teen survivors fight alien invaders in the dream world using their relationships to form battle mechas)
Fiasco (poor impulse control and bad decisions. the "Coen Brothers" rpg)
Grey Ranks (teenage polish soldiers in WWII)
Dread (horror gaming using a jenga tower)
Romance Trilogy (by Emily Care Boss -- it's how you get Shooting the Moon, Breaking the Ice, and Under my Skin, all in one volume)
Steal Away Jordan (slave narratives in the antebellum south. so good! kind of hard to find: lulu.com/us/en/shop/jul…)
Montsegur 1244 (beseiged cathars facing the pyre)
Warhammer 2nd Ed. (dark and weird fantasy)
FATE (a light and fast system for playing your own homebrew ideas)
Scum & Villainy (space adventure in the vein of Star Wars and Cowboy Bebop)
Infected (zombie survival horror)
Prince Valiant (one of the first 'storytelling' games)
Apocalypse World (sexy-ass post apoc action and the grand-daddy of many great games)
Masks (teen superheroes)
Breakers (dungeon crawling as a blue-collar job)
Swords Without Master (pulpy swords and sorcery with a novel game format)
Torchbearer (modern design for classic dungeon crawling)
The Warren (like Watership Down -- and just as brutal)
The Mustang (tragic Western folktale)