ShiVa,an authoring tool for 3D real time development allows you to make video games, serious game and other 3drt applications for professional use.
ShiVa is a complete tool, based on the StoneTrip cross-platform technology [Ston3D]. The Unlimited edition is especially designed for indie developer, full version but very low cost.

Learn : Discover a new kind of game development tool
Download : download now a free version
Evaluate : Try ShiVa and meet the developer community
Buy : StoneServer, ShiVa, training, it's all here