13th Age

13th Age is a roleplaying game that was designed by Jonathan Tweet and Rob Heinsoo for Fire Opal Media and is published by Pelgrane Press. 13th Age uses the Archmage Engine, a rules-lite game engine based on the d20 System. It draws heavily on inspiration from Dungeons & Dragons 4th Edition, with elements inspired by contemporary narrative- and story- focused roleplaying games. Like most other d20-based RPGs, there is a 13th Age SRD.