A flexible and easy-to-use physics engine for 2d written in java. A similar engine for 3d in c++, and a AI able to interact with the physics engine, affecting the world, written in c++ using neural nets and genetic algorithms.
A web-distributed 3D virtual universe for modellers, developers, scientists, gamers and social networkers. Pluggable visualization engines, navigation (vehicle/avatar) controls, model editors, scene editors, messaging.