Game ideas can start as one thing and change drastically when you go to prototype them and that’s OK!
— Carla Kopp
Take notes every time a player forgets a rule. Figure out if it was the #gamedesign or your teaching/instructions.
— John Brieger
A seasoned gamer can solve just about any problem in a design by adding rules.

A pro developer needs to solve the same problems while retaining simplicity and identity.

A master developer solves them while simplifying the game, still retaining identity.
— Eric Lang
There are a lot of ways to design a real-time game, but my favorite real-time games, and the way I like to design them, is to keep the actions and the amount of thought required for those actions simple. The fun of the game comes from making lots of small decisions under the stress of the time pressure. If there’s too much to keep track of in the game, and you’re under that same stress, the game gets bogged down.
— Kane Klenko
Being a professional creator means constantly letting discomfort into your life. Learning new tools and techniques, tearing down your creations and building them back up, seeking feedback, pitching, networking - all of these open you up to potential uncomfortable feelings.
— Emma Larkins
#gamedesign in 2 steps:
1) Find something that’s fun/interesting to do
2) Build a system that rewards players for doing that
(There’s obviously more to it - endless playtesting, balancing, simplifying, playtesting, and playtesting - but this is game design in its simplest form.)
— Peter C. Hayward
Even when focused on testing one game, bring along the prototypes for 1-2 others. Don’t miss out on extra tests.
— John Brieger