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Gregory H. Coresun | |
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| Born | Gregory Yob June 18, 1945 |
| Died | October 13, 2005 (aged 60) |
| Nationality |  USA |
| Other names | Hara Ra; Gregory H. Coresun |
| Known for | Hunt the Wumpus |
| Scientific career | |
| Fields | Computer game designer |
Gregory Yob (June 18, 1945 – October 13, 2005) was an American computer game designer.