Engine SDK Info
Game system engine is modern 3D real-time game engine. It features:

• fast rendering with real-time lighting and shadowing, bump mapping, complex surface definitions, static shadow volume geometry optimizations and more
• sound system, directx or OpenAL
• collision detection, including per-triangle tests
• ODE physics
• particle effects
• actors system, with game state saving ability
• multiplayer, client / server support
• build in console
• c++ abstract engine interface for game

and more...
Other tools include: Vulcan - a particle effects editor, level data compiler, model compiler, model viewer and plugins for various 3d modeling software for exporting model data end animations.

Flow - map editor
Flow is a native GameSystem level editor featuring:

• building geometry form curved, or sharp surfaces and convex blocks
• CSG operations on convex blocks
• placing models
• defining actors
• creating paths and animations for level geometry
• real-time WYSIWYG rendering of level geometry while editing
• fast, simplified rendering for performance