Our intention was (and still is!) for Rivers of London: the Roleplaying Game to be an introductory-level RPG, based on the Call of Cthulhu Starter Set and Call of Cthulhu 7 th Edition rules, taking the elements we know work well from its parent games and adding in the extra bits and bobs needed to support storytelling in Ben Aaronovitch’s beloved urban fantasy world. By Lynne Hardy, line editor for Rivers of London.Įven when the game you’re developing is based on a tried and tested system, you still need to playtest it to make sure that all the tweaks and additions you’ve made work the way they need to.
