   Best Game Engine for a Serious Game?
  I have been looking through the best game engine for indie game thread, and it's useful.  I wanted to target a question and build a list of useful Serious (educational) game engines, though.In your opinions, what game engines are viable options for a serious game?  Serious games typically require some of the following:1) Allowed to cost somewhat more than an Indie engine, but definitely not required2) Art assets for humans (although many serious games are not third or first person environments)2a) Gesture art assets, skeletal animation systems, facial expression capability is a plus2b) An important bonus with many serious games is cultural or domain-based art asset packs, including people, places, and things.  Features like, being in a school, in a foreign country, a military setting (with weapons, near battles), or in an office are useful for many serious games.3) Allows high fidelity of manipulation of the AI and user in the game (access to what the AI is able to "see" or ability to program the AI's actions to a high degree and independent of user behaviors.Bonuses are:4) Multiuser or online multiplayer access (but single player access should be trivial of course!)4a) Chat input5) Large range of inputs, built in speech is a nice bonus (especially if multiplayer access is supported and it isn't just a 3d engine)6) Doesn't force the developer to make a first person gameWhat are your thoughts?  What Virtual Environments support these needs best?   
  I think you're confusing game engines with game assets.  They come separately and the engine just has to support several 3D model formats and texture formats.What scripting languages do you know?  If you know Python then Panda3D is a good engine to start out with.  It's used by the Carnegie Mellon University in their game-design major.Otherwise it's anyone's guess.  If you're trying to make an MMOG, I'd suggest starting with something smaller.  The manpower requirements for MMOG's is too much for one person to handle.   ;  Apologies for any confusion,I'm looking for a virtual environment that provides licensing and a great starting point for a serious / educational / training game. Examples of what I am looking for: Delta3D - an open source game and simulation engine being developed for training simulation gamesOlive - a corporate industry training system.I'm not confusing game engine with game assets. A 3d Engine would be fine, but that lengthens the path of development of the game versus a virtual environment with some assets bundled. I am not trying to make an MMO.   