Hey, just a heads up. You might want to check the Demo. I tried running it and it gave me this error:
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FATAL ERROR in Vertex Shader compilation
ShaderName: shd_pal_swapper
D3DXCompile failed - result
at gml_Script_pal_swap_set
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stack frame is
gml_Script_pal_swap_set (line 0)
gml_Object_obj_unit_Draw_0
Edit: Oops, forgot to mention, I'm running this on Windows 10.