This is interesting. And it can really change the indie world. There is a very hot discussion running at GarageGames:
http://www.garagegames.com/blogs/83134/15952

Torque3d (the evolution of TGEA) should become more expensive (maybe 1500 $) and many people are ready to leave the ship now. Unity3d and C4 are the alternatives they mentioned most often. And if there is a Windows port of the Unity toolset then this will happen very fast.

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