- 5 why (ask why 5 times)

- prototype the worst case scenario of your game

- the only document you need is a gym(a level where you test all your mechanics)

- use horizontal solutions (1 solution for multiple problems)

- all levels contain every difficulty (the further you go in the level the harder it gets)

- Random employee kidnapping (play-testers)

- build the 1st & last level of the game

- - 1st level = basic gameplay

- - last level = combine elements + ramp difficulty

- go take a walk (Sunday there's nobody)