Here at Cannibal Halfling we’ve been system hacking for more than six years: Taking game systems we know and love and making them do something else. In some cases this has been fairly concrete, like adding mecha to Genesys or designing a way to play Fiasco with two tables that switch it up at The Tilt. Other times we’ve gotten abstract, talking about dice or playing cards or what ‘advancement’ is. In every case, though, there’s been a common thread: We’ve looked at an existing piece of game design and, with our experience playing and running games, made it do something else.

This sort of hacking is both easier and harder than clean-sheet game design. We’re working with the assumption that the game we’ve chosen works, and works very well, for a core of what we want our game to be about. That means that as we address the things that it doesn’t do well or doesn’t do at all, we need to preserve the strengths that already incited us to pick the game in the first place. Luckily, hacking is built into the culture of roleplaying and, because of that, is often built into the games we play from go. Apocalypse World had an entire chapter on creating custom moves before anyone knew that there was a demand for it. Fate has structured essentially all of its rules supplements into ‘toolkits’ for helping you make the system do what you want. The OSR is predicated on backwards compatibility with the entire d20 universe. We are a hobby composed of hackers.