The list below contains all of the hints we've produced since we started the UHS in 1988, so it includes both older and newer hints. If you want a list of just our newest hints, you can go to our What's New section.

 
O
Oblivion (alt. title)
Stanley Dunigan (updated 10-Jan-09)
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Obsidian
Jason Strautman
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Odyssey: The Search for Ulysses
Jason Strautman
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The Omega Stone
Christine Nicodem & Frank D. Nicodem, Jr.
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Omikron: The Nomad Soul
Jeanne Muse
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Operation: Anchorage (alt. title)
Stanley Dunigan (updated 23-Jun-10)
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The Orange Box: Half-Life 2: Episode Two
Stanley Dunigan (updated 05-Mar-09)
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The Orange Box: Portal
Stanley Dunigan (updated 05-Mar-09)
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Orion Burger
Domen Novak
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Out of this World
Jeremy Penner
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Outcast
Alex Burrell
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Overclocked: A History of Violence
Luke Charman
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