Game Design Document

Lemonade Lab


Core Concept

Lemonade Lab is a kid-friendly lemonade stand simulator where players experiment with recipes, pricing, and smart decisions to run a stand for one in-game year. Each day they adjust ingredients, set a price, and simulate sales. Over time they unlock deeper systems like upgrades, investments, and giving. The game makes business fundamentals feel playful, understandable, and rewarding.


Core Loop (30 Seconds)

  1. Adjust recipe (lemon, sweetener, ice).
  2. Set price.
  3. Optionally run a special.
  4. Click “Start Day.”
  5. Watch customers buy, tip, or walk away.
  6. Review profit, tips, costs, balance.
  7. Advance to next day.

Clear decision → clear result → repeat.


Controls (Web Browser)

  1. Mouse click for buttons and actions.
  2. Sliders for ingredient amounts.
  3. Plus and minus buttons for pricing.