Paul Sottosanti's first foray into game design was an unofficial expansion for the classic board game Titan at the age of 12. He got his start in the industry at Wizards of the Coast, where he initially designed cards for the Neopets and Duel Masters trading card games. He then started working on Magic: the Gathering, designing such cards as Shadow of Doubt and Pact of Negation, and was on the teams for the following expansions: Betrayers of Kamigawa, Ravnica, Planar Chaos, Lorwyn, and Morningtide. He strongly contributed to the Tribal mechanic and the unique aspects of each of the races in Lorwyn, and as lead designer of Morningtide for that set focusing on classes instead. He also contributed playtesting to several Avalon Hill offerings and put together the course booklet for the most recent release of RoboRally. Following that, he moved into the digital realm and was the lead designer for Magic: the Gathering ArtFight and Dungeons & Dragons: Tiny Adventures on Facebook.
After five years at Wizards he transitioned to Maxis and was the systems designer and eventually lead designer for the sci-fi action RPG Darkspore. Following that he moved to Riot Games where he designed both the current ranking system and the directed camera (automated camera system for the spectator mode) for League of Legends, then moved to focusing on game design for R&D projects, where he has worked ever since.
In his spare time, he is always tinkering on a variety of board game designs, many of which he hopes to have published in the coming years.