An interactive basketball board game system having a substantially planar surface serving as a game court with removable perimeter borders that define a playing area. The system includes basketball hoops and backboards secured to end borders, and miniature basketballs. The court surface features magnetic-receptive material enabling interchangeable court illustrations. The system incorporates authentic basketball simulation mechanics requiring balls to bounce once before shooting attempts, foul calling systems, and alternating possession rules. The compact, portable design allows for easy assembly, disassembly, and storage while providing comprehensive basketball gameplay experiences suitable for various skill levels and player counts.

A base assembly includes a base and at least one ribbon. The base is configured to move across a surface. The base includes a target zone configured to be hit by a gameplay object. The at least one ribbon is configured to expand and retract and connect to a connection point. The at least one ribbon at least partially defines an arena. The at least one ribbon expands or retracts in response to movement of the base, thereby dynamically changing at least one of: a size of the arena or a shape of the arena.