• Primary functions and templates (memory-copy, Array, String etc.)
• File/path handling functions (ReadTextFileToString, F_GetModTime etc.)
• Image functions/objects/templates (Image2D / Image2DF objects, PNG load/save functions)
• An entity/parameter management system (registration, assignment, serialization etc.)
• A sound system (OpenAL-based, supports 3D sounds and Ogg audio streaming)
• A scripting system (AngelScript-based)
• A networking system (UDP socket-based, supports reliable communication)
• A complex primary IO system (output - OpenGL-based renderer) that includes:
  • An input manager (with rule-based serializable action mapping)
  • A complex context/window system with support for multiple windows and rendering contexts
  • A simple, vertex declaration-based rendering system
  • Fully-featured shader management with shader caching and variable links
  • Texture object system that supports all texture types and streaming of file-based textures
  • A stack-based framebuffer target manager with support for all kinds of framebuffers
  • And, of course, the extremely powerful UI system - a clever mix of IMGUI and RMGUI systems

• A mesh object (with a custom file format)
• Mesh generation tools
• Imposter rendering systems
• A game level object (that includes a WYSIWYG editor)
• An AO lightmap renderer & lightmap texture coord generator
• A simple particle system
• A physics library wrapper (using Bullet)
• A (slightly outdated) animation system (which was improved in Gunplay:NQA)

Currently these features are being moved to the SGE-3D add-on and are improved/rebuilt in the process.

• The source (SGEngine v2 - without the 3D stuff) is only 570 kB big and consists of only 17000 lines of code.
• The engine has been in development for 2 years and has experienced lots of partial rewrites.
• The original version of the engine was written with D3D[X]9 and included a fully-functioning BSP/CSG map compiler and a radiosity lightmap renderer.
• The engine has its own standard library which in some parts performs significantly better than the Dinkumware implementation of STL.
• The engine has suffered from having lots of projects stopped in the middle of development:
  • Vector Jumper - a stealth-based 3D platform shooter featuring an android as the hero. Cause: other projects stepping in. Status: to be determined.
  • An unnamed 3D parkour game. Cause: found out that the concept was doomed (lifeless). Status: to be determined. Fun fact: it was just as lifeless as Minecraft and was set to feature a similar graphical design.
  • Dominant Strike - a stealth-based 3D adventure game set in forests. Cause: lack of initial experience with the selected technology. Status: to be finished ASAP.
  • Gunplay: No Questions Asked. Cause: lack of time to make an impressive-enough demo. Status: to be finished ASAP.
  • Texture Designer v2.0. Cause: lack of time to make an impressive-enough demo. Status: to be finished ASAP.