This study explores whether a life metaphoric game can effectively facilitate communication between senior participants and young adult partners during a life review activity. Life review provides older adults with opportunities to organize their past experiences, rediscover the meaning of life, and prepare for their future life and eventual death. We held workshops in which 33 senior participants (ages 51-85) co-played a commercial game, titled "Long Journey of Life,"paired with young adult partners (ages 19-23). The young partners asked senior participants about their associated memories during the life review activity. Through inductive thematic analysis, we found seven communication themes during the life review activity: reminiscence, future and death preparation, life advice, appreciation and evaluation, small talks involving self-disclosure, interpretation of metaphors, and explanation of game control methods. We investigated the relationships between communication themes and game design elements that promote conversation. In addition, we identified how participants? responses to the game differ depending on the player's characteristics and generation. Game design suggestions for an effective intergenerational life review using digital games were offered.