The Game Patent Atlas
The legal and physical history of gaming interfaces. Trace the patent lineage from Lizzie Magie's 1904 Landlord's Game to Ralph Baer's 1968 Odyssey, Gunpei Yokoi's D-Pad, Namco's loading screen patent, and Warner Bros' controversial Nemesis System.
Click numbered hotspot nodes on the technical schematic to inspect legal claim disclosures.
Game Board (The Landlord's Game)
Corner 1: Place of Confinement (Jail)
Punitive state space capturing players exceeding movement boundaries or failing legal audits.
Established the universal roll-and-move spatial quadrant layout adopted by Parker Brothers in 1935.
Created as an educational demonstration of Henry George's Georgist single-tax economics. The game contained dual rule sets: an anti-monopolist cooperative mode and a predatory monopolist mode.
Multi-Directional Switch (The D-Pad)
A cross-shaped directional key having four arms radiating from a central pivot point, allowing a single thumb to actuate discrete directional switches while preventing contradictory simultaneous inputs (e.g. Left + Right).
Replaced cumbersome arcade joysticks with a flush, pocketable thumb interface, making Game & Watch and the Nintendo Entertainment System (NES) the universal template for 2D console navigation.
- • Arcade 4-Way Ball Joystick
- • Milton Bradley Microvision (Paddle Knob)
- • US 6,171,190 (N64 3D Analog Stick)
- • Sony PlayStation Cross-Key