For established game designers, finishing is the hard part. For aspiring designers, starting is the hard part. Prototype your game NOW.
— Chris Rowlands
New designers should be open to other ideas that weren’t part of the initial vision of the game and be open to outside ideas from developers, friends, and playtesters. You never know when an inspiration will come that will make a good game into a great game.
— Dale Yu
Playtesting your game? Write down the results of each game. You can do extraordinary things with that kind of data.
— Brandon Rollins
Spend as little time as possible creating the first prototype, because you will definitely trash it and build something new just after the first playtesting session.
— Bruno Cathala
Tip for new designers: your first half-dozen games (at least) are going to be terrible. Lower your expectations, iterate quickly, and be prepared to throw them out.
— Peter C. Hayward