I've been blown away by the reactions to the Occulus Rift. Its great to see the Outerra developers embracing it. One common impression I've heard is the impressive sense of scale you get while wearing it. Players have reported feeling physically shaken by the harrowing jumps in games. Many feel as though combat is too intense, and they prefer exploration.
When I see videos of the majestic mountains of Outerra, I can't help but visualize how perfect a mountain climbing simulation could be paired with Outerra and the Occulus Rift. Climbing tools, adverse weather conditions, setting up camp, are examples of gameplay mechanics that could be represented. I can only imagine the sense of vertigo you would get with a to-scale representation of a mountain with the Rift on. Game concepts that seemed impractical before now seem possible with the Rift.