Spray Paint Simulator is a casual simulation game where players establish and manage their own spray-painting business in the town of Spatterville. The core gameplay loop involves restoring, repairing, masking, and spray painting various objects and locations, from household interiors to large landmarks. Players must manage consumables like paint and masking supplies, and upgrade their tools and equipment to improve efficiency.

The game features a Free Spray mode, allowing players to freely express their creativity on completed projects and the surrounding environment. Players progress by completing jobs for customers, earning their way to becoming the town's top spray painter. The simulation elements extend to managing business resources and upgrading equipment for enhanced capabilities.