Okay, can you improve the game so it works on all PCs, or does it only work on certain ones?
We are doing our very best to optimize the game to run in as many PCs as possible. However there are some minimum requirements that a PC must have to be able to run the game. Most notably you need a minimum of 1.5GB of video RAM to load the game textures. If your PC is too old may be using the OpenGL render mode will help, do so create a shortcut to the game exe and add the following flag:
--rendering-driver opengl3
in the target field just after the .exe and outside the quotes if any.