Leadwerks Game Engine: Indie Edition on Steam is now just "Leadwerks Game Engine".
Leadwerks Game Engine: Standard Edition on Steam is now "Leadwerks Game Engine: Professional Edition".
When I first put Leadwerks on Steam, it was just an experiment. Separating out the Lua version was something I had not done before. In fact originally, Leadwerks was a C++ library only, and Lua support was added later. After the last two years on Steam, it makes sense to consider the Lua version our main product, and the C++ add-on is more of a high-end advanced option.