there are a lot of options, each with different pricing, and for different programming and 3d art skills. probably "the Borg" Unity is the winner, especially its torrent version , but UDK, Neoaxis, Esenthel, Torque, C4, Shiva, Ogre etc. are also can be a good choice, depending on your requirements. imo if you're just a hohhyist, Unity Pro is too expensive, and the free is simple not enough.
, but UDK, Neoaxis, Esenthel, Torque, C4, Shiva, Ogre etc. are also can be a good choice, depending on your requirements. imo if you're just a hohhyist, Unity Pro is too expensive, and the free is simple not enough.