Not "monetarily" as high value as some of the other examples here, but Icefrog, the lead developer/game balancer for Dota and Dota 2 is also mostly pseudonymous

Not "monetarily" as high value as some of the other examples here, but Icefrog, the lead developer/game balancer for Dota and Dota 2 is also mostly pseudonymous. I think if it weren't for some stupid comments by a League developer (?), no normal people would know who he is. Now, if you try hard enough, you can find his identity leaked in an old blog/forum post (?) and have it proven/corroborated in other areas online I think.