How do I create a paper prototype that is easy to change during design?

Start with the decision you want players to make, not with a list of attractive objects to draw. Write one test question, such as: “Will players choose between saving a resource now and spending it for a stronger move?” Then list only what players need to see, choose, and track to answer that question.

For a hypothetical small adventure game, that might mean three action cards, a resource track, a player marker, and a short turn reminder. It probably does not require illustrated cards, a finished map, or detailed backstory unless those things affect the decision you are testing. Treat this as a temporary test version: blank boxes and short labels are fine.

Match the format to the kind of change you expect. Use separate slips or index cards when you may rewrite, reorder, add, or remove options. Use a pencil-marked sheet for values or tracks that are likely to change. Use loose counters, coins, or paper squares for pieces whose position changes during play. A single sheet can work for a stable board, but keep uncertain sections in separate pieces so you do not have to remake the whole page.

For example, if you might change an action’s cost, put each action and its cost on its own card rather than drawing all actions into one large board. Keep materials ordinary and easy to replace; neatness matters less than whether players can tell pieces apart and handle them.

Give every component only the information needed to use it in the test. A card may need a name, the choice it offers, its cost, and what happens when it is selected. A track may need a label, starting value, and range. A movable token may need a distinct mark and a clear meaning. If a detail is undecided, use a visible placeholder such as “[cost]” or “[effect under review]” rather than inventing a final rule.

Here is a copyable component plan for the hypothetical resource-choice test:

1. Action card — one per action; show action name, cost, and immediate result; write on separate cards so options can be replaced.
2. Resource track — one per player; show resource name and current amount; use pencil marks so values can change.
3. Player marker — one per player; show whose turn or position it represents; use distinct paper shapes.
4. Turn reminder — one shared slip; show the order of steps players need during the test; revise it if players repeatedly ask what comes next.

Add a component only if players need it to make or understand the test decision.

Before the test, write down the decision you are observing and the component details that could affect it. During play, note specific moments: a player searches for an option, asks what a label means, forgets a tracked value, or makes a choice you did not expect. Record what happened without immediately treating one reaction as proof that the whole design is wrong.

Afterward, sort notes into two groups: “presentation issue” (the information was hard to find or understand) and “game decision issue” (the options or consequences need reconsideration). Change one relevant component at a time when practical, and keep a dated note of what you changed. That makes it easier to compare the next test and to avoid polishing pieces that are not part of the question you are testing.