Knave is a rules-lite tabletop rpg written by Ben Milton of Questing Beast (and available here ). It's OSR compatible, incredibly easy to teach, and even easier to run. Between reading its seven-page rulebook, and rolling characters, you and your players will be dungeoneering and adventuring within minutes. For starters, it's a fairly standard d20+mod roll-over system (as in, roll higher than a target number). If you're experienced with Dungeons & Dragons 5e or Pathfinder , more than anything you're going to be spending more time unlearning things than having to learn anything new. What I loved For being so lightweight, it's actually pretty hard to pick a feature that I love the most. Every mechanic and rule within the book has purpose and weight, and is balanced well within the system. Things just make sense. Each of its six traditional ability scores (Strength, Dexterity, Constitution, Intelligence, Wisdom, Charisma) share equal importance so there...
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