iGame3D Aquarius Chars

Very old demonstration of iGame3D from 2009.

Scripted with Lua.

It's a working game engine, not an entirely working GUI though. 

Escape key to enter editor mode,
escape key again to lock the mouse to camera,
and escape key again to get back into game mode.

See uDeadGame for more content: https://ig3d.itch.io/udeadgame2009

The source code is GPL and available on sourceforge, if you want to learn to make your own game engine in C, as one often does:
https://sourceforge.net/projects/igame3dsource/

This application is provided as is without any warranty or claims of fitness for any purpose.