Radiance RPG focuses on the late 19th and early 20th century. That said, it supports any genre—guns, monsters, and/or magic—up to (but not including) today's world. It blends several editions of the world's most popular fantasy RPG. If you've played a d20-based game, you will find familiar terms and situations. That said, a single combat needn't take 3 hours! Scheming to marry off a wealthy princess may prove just as vexing as defeating a dragon. Rules-lawyering and power-gaming are subdued for a more even-handed, fun experience.