Low Fantasy Gaming (LFG) is a tabletop role-playing game built for sword & sorcery adventures in low magic worlds. It is a generic ruleset for use with published low magic worlds or a world of your own creation. With some tweaking, LFG could handle most fantasy settings, but the system assumes low fantasy.
LFG is rules light, with a heavy emphasis on GM rulings. It's a hybrid of old school and modern game design, based on the 1d20 Open Game Licence.