Mzo  

Remember, when prototyping, your focus is just on testing, not engineering a grand design or building a whole game. Imagine you'll throw them away when finished.

So I guess shouldn't try and design for future game ideas or put in features not part of the test eh?

Right, that means you probably don't need most standard game trappings like lives, win states, story, title screens, etc in most of your prototypes.

Unless of course those are the things I'm testing!

Always leverage all the tools, features, assets, etc available as you can to accomplish your goal. Accomplish the tests while doing the least work possible, save that for actual production!

Get more done, do less work? I can get in board with that!