The Oakland Museum of California is a great place to visit. From 5–9 pm every Friday night, the Museum has special programming, food trucks, live music, and more. Some current exhibits: Queer California: Untold Stories & Take Root: Oakland Grows Food
Victory Point is a board game cafe where you can pay $5 per person to play games for as long as you want. They also sell coffee drinks, beer, wine, pizza, sandwiches, and more. FYI - it is a very popular place, so if you are certain you want to go for gaming, you can reserve a gaming table or just call ahead to see how busy they are.