The G5 Sahel countries – Burkina Faso, Chad, Mali, Mauritania and Niger – are confronted with multiple challenges. This report uses the International Futures forecasting system to analyse the likely development trajectory of these five countries to 2040 in agriculture, demographics, infrastructure, governance and education. It compares these prospects with the combined impact of a positive Desert Flower scenario and a dystopian Sahelistan scenario and presents recommendations for the future.