We present JackIn Airsoft, a system for generating maps for multi-player sport activities and sharing their first-person views (FPVs). In first-person shooting (FPS) games, maps are generated for the visualization of the player’s location; these maps are used for strategic play and discussions. FPS games are a virtual experience of shooting or of military activities; the displaying of maps on a screen is a technique designed for game playing. We address the challenge of adapting this effective map visualization technique to real-world strategic sports. We developed a prototype map generator for airsoft sports that is based on the usage of wearable cameras and simultaneous localization and mapping (SLAM). The system enables users to switch between the FPV and the generated map in order to share a player’s experience and a strategic overview for team sports. We applied ORB-SLAM2 to multiple recorded FPV videos to discuss the situations and conditions appropriate for our system.