Flat Top Johnny's at 238 Main St in Cambridge is a no-frills pool hall and dive-style arcade bar featuring a roughly 10-machine pinball bank, multiple pool tables, darts, and a burger- and hot dog–forward menu with affordable beer and a retro, lively Kendall Square vibe. Customers frequently praise the well-maintained pinball lineup and casual atmosphere, making it a popular local spot for pinball, pool, and inexpensive late-night eats.