This book constitutes the proceedings of the The 6th International Workshop on Democracy and AI, DemocrAI 2025, and the 2nd Workshop on Game AI Algorithms and Multi-Agent Learning, GAAMAL 2025, Held in Conjunction with IJCAI 2025, Montreal, QC, Canada, August 16&22, 2025, Proceedings The 05 full papers presented here were carefully reviewed and selected from 13 submissions. AI-driven technologies are reshaping how information and services are processed, monitored, and managed, with profound implications for evidence-based policy planning, democratic decision-making, and public service delivery.