Abstract: A touch-based computer graphics user interface enhances a stylus pen with virtual suction to create a virtual vacuum or suction tool. The virtual tool may simulate a physical world suction tool and/or provide capabilities not available in the real world. The virtual suction tool allows the user to feel as if he or she has transcended the boundary between the virtual world and the real world by physically holding in his or her hand an object that is able to interact with and virtually attract and contain items (e.g., objects with characteristics and behaviors) removed from or expellable into the virtual world. The resulting highly intuitive user interface provides fun and exciting video game play and has other applications as well.