LOST GEMMA W is a reimplementation of the designer's earlier game Lost Gemma, but with enough changes to be a new game. LOST GEMMA W is card game with a theme of treasure hunting. The goal of the game is to find a route that leads to a "Gemma" (which means "gem" in Latin) as soon as possible. However, there are two Gemma in the game, and the player who reaches the farther Gemma is the true winner. Before exploration, players take turns playing a card to create a map of the labyrinth. Some cards have a special effect that changes the game in various ways. ••• ãƒ—ãƒ¬ã‚¤ãƒ¤ãƒ¼å…¨å“¡ã§ã‚«ãƒ¼ãƒ‰ã§åœ°å›³ã‚’ã¤ãã£ã¦ã„ãã€ã‚²ãƒ¼ãƒ ä¸­ã«è¨­å®šã—ãŸã‚¹ã‚¿ãƒ¼ãƒˆåœ°ç‚¹ã‹ã‚‰ã€éš ã•ã‚ŒãŸå®çŸ³ï¼ˆGemmaï¼‰ã¾ã§æ—©ããŸã©ã‚Šç€ãã®ã‚’ç›®æŒ‡ã™ã‚²ãƒ¼ãƒ ã€‚ãŸã ã—ã€å®çŸ³ã¯ã‚²ãƒ¼ãƒ ã«ï¼’ã¤ã‚ã‚Šã€ã‚¹ã‚¿ãƒ¼ãƒˆåœ°ç‚¹ã‹ã‚‰ã‚ˆã‚Šé ãã«ã‚ã‚‹å®çŸ³ã«ãŸã©ã‚Šç€ã„ãŸãƒ—ãƒ¬ã‚¤ãƒ¤ãƒ¼ãŒçœŸã®å‹è€…ã§ã™ã€‚ 地図を作る時、各カードに特殊な効果がついており、色々な展開が起こるようにもなっています。