The L-SIM Engine is an open-source game engine made in C++ using OpenGL. The engine aims to be a bloat-free yet capable engine designed with procedural generation and programmers in mind. The engine also aims to reduce long loading times and avoid having to deal with unintuitive systems.
NOTE (IMPORTANT): The Demo button takes you to the download. The zip file contains both the source code and exe (located inside the LSIM dir) the source code is needed to build games because I didn’t make a dll for v1.0. Also, you may experience and error when loading the engine. I can’t remember exactly but I think it says something about stdlibc. To fix I think you need to install mingw.