Devil Dice Board Game Cafe Gangnam-daero is a cafe on Gangnam-daero in Gangnam, Seoul where visitors play board games and have drinks. Some games, such as Catan, require explanation, and staff guide players through the rules, with many games available. Use runs in one-hour blocks and can be extended in 10-minute units, and staff bring games to the table and clear them when you leave. When the cafe is crowded, staff service is uneven.