Since no one seems to want to debate this, I assume that's all the ideas there are. so we have:
- Crystal Space
Price:Open source (free) - Genesis 3D
Price:Open source (free) - Unreal
Price:$350,000 plus royalties; 1 platform; $50,000 for additional platforms.$750,000 royalty-free; 1 platform; $100,000 for additional platforms
- Torque
Price: $100
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