| http://www.w3.org/ns/prov#value | - They are both free softwares although Unity does have a paid version with added features.There are a lot of other options, some industry standard software would be Maya, 3d Max, Zbrush etc for the 3d modeling and for the engine some companies use an existing engine such as Unreal or CryEngine and others develop their own engine from scratch or use a combination of existing software and their own.
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