lightwave?
3-d studio max
proprietary?
Revelation was built using 3DS MAX, though the exact version number I'm not sure of... possibly 5, upgraded to 6. I also couldn't tell you what renderer they used to produce the final stills, though my guess would be probably mental ray, which comes with MAX now.
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Guild of Archivists,
D'niPedia Writers Ring (DPWR.NET)
Uru and Myst Forum Moderator / Community Assistant
Do not PM me for tech support or hint requests for the Myst series
Its defiantly done in Max. you can see it clearly in the making off video clips. (alive_enmyst.mov)
The rendering was most likely done with custom shaders, like in Riven. it is entirely possible that it was done on a render farm somewhere.
Ubi has their own renderfarm, actually... we got to see video of the Revelation office including the renderfarm at Mysterium last year.
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Guild of Archivists,
D'niPedia Writers Ring (DPWR.NET)
Uru and Myst Forum Moderator / Community Assistant
Do not PM me for tech support or hint requests for the Myst series
rendered with V-Ray