: Build a "grey box" version with no art.
: The specific rules and player inputs (e.g., button presses, movement physics). Game Design: Theory & Practice 2nd Edition
Rouse outlines a specific iterative workflow to ensure a feature actually works in practice: : Build a "grey box" version with no art
: Add final models, textures, and sounds only after it is fun. Sam’s momentum is preserved
: Add the actual mechanics (combat, puzzles, etc.).
: Observe unbiased players to see if the feature meets expectations. Example: "The Magnet-Grapple" (Atomic Sam Style)
: Sam fires a magnetic tether. It only sticks to metallic "Retro-Tech" surfaces. While tethered, Sam’s momentum is preserved, allowing for wide swings.