| 摘要 |
PROBLEM TO BE SOLVED: To enable a player to select freely a plurality of travelling courses for competition by branching a traveling course between a predetermined start spot and a goal spot to form a plurality of travelling courses. SOLUTION: A field 11 represents the whole space expressed in a picture image of a computer graphics and is provided with city roads 12 of travelling courses and a model designed to comprise buildings or the like set around the city roads 12. The city road 12 is provided with a predetermined start spot S and a goal spot G, while being provided with three-dimensional crossings R1, R2, R3 provided in the left central spot, right central spot and the lower spot, traffic alarms disposed in central and the lower crossings (branching points) K1, K2 and a railroad crossing H provided near the three-dimensional crossing R2. |
