Language, history and curiosities in games.
Balance is not the same thing as fun.
There are many ways we find fun in games, and I will talk about the others. But learning is the one I believe to be the most important.
I still find it interesting to make games as simple as possible, without losing the fun.
Aesthetic pleasure is no small thing. If your game is full of beautiful artwork, then every new thing that the player gets to see is a reward in itself.
It’s no fun to feel as if you have no chance; any uncertainty departs.