Compatible mechanical and/or electrical connections to video game system accessories provide unique shape, design and dimensions that discourage or prevent non-compatible devices from being connected, connector configurations that allow connection only in a proper orientation to ensure electrical compatibility and eliminate the possibility of short-circuits, quick release locking arrangement firmly mechanically holds mating connectors together despite extensive movement of the game player's arms and hands, staged electrical contacting sequence provides proper signal application sequence, and wrist strap to tether handheld remote controller to hand is attached to a locking connector that mates with a connector of the remote controller.