[lifthrasiir]

> which is what game dev essentially is for the most part of the process...

Except that it isn't. You don't maintain the equal velocity of changes throughout the process, even for indie games. And there are always portions of the game amenable to tests.

[jayd16]

Its not like tests are impossible. It's more that TDD is almost impossible.

[coldtea]

Changes until the last minute to crucial gameplay elements are not uncommon..

[omg_ketchup]

Sure, menus and networking. Maybe loot distribution, level generation, etc.

Not so much actual gameplay though. That does constantly get tweaked.