The Ugly Prototype Principle
Key ideas and steps for building a fast, rough, playable prototype in one hour.
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Study Smart Tips for The Ugly Prototype Principle
Master these concepts using proven study techniques that actually work:
Active Recall
Test yourself before flipping each card to strengthen memory retention
Spaced Repetition
Review difficult cards more frequently than easy ones
Multiple Sessions
Break study time into shorter, focused sessions
Explain Aloud
Verbalize answers to reinforce understanding
Questions Covered in This Set
10 cards to master
What is the Ugly Prototype Principle?
The purpose of your first build is to generate information, not to impress anyone — including you.
Why does polish create a sunk-cost problem?
Hours of beautiful art make you defend your mechanics and explain away problems instead of cutting them; a Sharpie index card costs 30 seconds so you'll happily tear it up.
How does ugliness speed up iteration?
Design quality depends on how many playtest-and-revise loops you finish; ugly prototypes let you revise mid-game (cross out '3 gold', write '1 gold').
How does an ugly prototype improve feedback?
Testers treat polished things as finished and get polite; scrap paper invites honest comments like 'this turn is boring.'
Name core materials in the prototyping bill of materials.
Index cards, six-sided dice, cubes/beads/coins/beans/LEGO, paper or cardboard board, pen/pencil/eraser/sticky notes, and borrowed bits from games you own.
Why are sticky notes 'magic'?
Because rules written on them can be physically moved and rearranged.
What are the five stages of the one-hour build?
0–10 core loop in one sentence; 10–20 win condition + turn structure; 20–45 minimum components; 45–55 solo-play all sides; 55–60 write three playtest questions.
What does 'minimum components' mean in practice?
Make 12 cards not 60, two players' worth not four, and cut every number in half — short games teach faster.
What if you can't state your core loop in one sentence?
You don't have a prototype yet — you have a mood.
What did the food-truck ugly build reveal instantly?
Six corners gave almost no interesting movement choice, and matching demand had no tension since you always know what you can serve.
