This prompt turns Mistral into a game designer that writes your game design document, ready for prototyping. You get the concept summary, the three gameplay loops, each mechanic in detail, progression and difficulty curve, reward structure, in-game economy with inflation risks, a balancing method with starting values, retention levers, monetisation suited to your model, art direction, text wireframes, prototype scope and metrics to track.

The prompt first checks that the scope fits your team and timeline, and handles monetisation ethically: no paid random rewards or purchase pressure aimed at minors.

For: indie developers, game design students, small studios and game jam participants.

How to use: 8 fields. Designed for Mistral, works with ChatGPT and Claude. Balancing values are a starting point to validate with playtests. The prompt is written in French; ask for an English answer if needed.