Overview

• Over 30 billion permutations represent roughly 30 times the combinations available in Borderlands 3 and are enabled by expanded procedural generation and a modular parts system.
• Gearbox built a detailed 'gun map' in Unreal Engine to visualize every weapon component and ensure proper fit and animation across parts.
• Cross-manufacturer mixing allows attachments from one brand to be fitted onto weapons of another, such as Daedalus underbarrels on Maliwan shotguns.
• The franchise’s disposability-first loot philosophy remains central, with most weapons designed to be discarded unless they reach rare status.
• Borderlands 4 is scheduled to launch on September 12, 2025, on PC, PlayStation 5 and Xbox Series X/S, and will introduce cooldown-based heavy-weapon mechanics called Rep Kits and Ordnance.