When designing a TRPG mechanic, answer these three questions:
1. What question does it answer?
2. When during a session does it come into play?
3. Why is this a new rule, rather than a repurposed existing one?

— Mike Mearls (@mikemearls) August 12, 2018

I really, really, really wish tabletop design had an even stronger tradition of emphasis on speed of play. I don't *care* if your rule is "super-accurate" and takes a million factors into account, if I have to use a million modifiers every time. https://t.co/7RRXbRUMKL

— jmatonak (@jmatonak) August 12, 2018

Trad RPG designers – THIS!

Indie folks you already have this figured out by cleverly not trying to do everything at once all the time. https://t.co/SycfqxlbSt

— Mike Mearls (@mikemearls) August 12, 2018

You know you’re playing Champions when rounds can be measured in 1/13th pieces.

— Mike Mearls (@mikemearls) August 12, 2018

#3 is a very good question Probably the most important lesson that @JeremyECrawford teaches – it’s his mantra.

— Mike Mearls (@mikemearls) August 12, 2018