It is very easy to want to get the game out of the gates as quickly as possible and launch it on Kickstarter or sell it online as soon as possible.  Wait.  Get it play-tested and refined.  Do your research both on the design end and the business end.
— Dan Letzring (@LetimanGames)
Know what you’re getting into. Once you get past the thrill of expressing your creativity, you have to deal with setbacks and criticism. Making a game is fun. Publishing it is business.
— Ivan Turner (@igturner)
Playtesting is more about finding where your design needs improvement, rather than validating what you did right.
— Chip Beauvais (@the_FlyingSheep)
The best feedback doesn’t come from asking someone a question and hearing their response. It comes from just sitting back and watching them play.
— Michael Keller (@vhgames)