From the kickstarter description : The Black Hack is a super-streamlined roleplaying game that uses the Original 1970s Fantasy Roleplaying Game as a base, and could well be the most straightforward modern OSR compatible clone available. If speed of play and character creation, compatibility, and simple - yet elegant rules are what you yearn for. Look no further!
This current Let's Role system allows you to play quickly with everything at hand on the character sheet (stat rolls, abilities, equipment, magic, rules reminder). The power of an OSR leader game system at your fingers.