Bay seniors with a healthy sense of aggression will enjoy letting out their inner NRA at DartOps in San Bruno’s Tanforan Mall. It’s like a clean version of Paintball. You airblast soft darts at targets or each other in games like Capture the Flag and Team Death March. Starts at $5 per 30-minute game. Intended for your grandchildren but sounds like fun for even geezers who will no doubt have the place to themselves during school hours.