diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -22,10 +22,14 @@
 
 
 run-core-debug: 
-	cd isometric-park-fna/bin/Debug/netcoreapp3.1; LD_LIBRARY_PATH="../../../fnalibs/lib64" DYLD_LIBRARY_PATH="../../../../fnalibs/osx" dotnet ./isometric-park-fna.dll
+	cd isometric-park-fna/bin/Debug/netcoreapp3.1; LD_LIBRARY_PATH="../../../../fnalibs/lib64" DYLD_LIBRARY_PATH="../../../../fnalibs/osx" dotnet ./isometric-park-fna.dll
 
 run-core-release: 
-	cd isometric-park-fna/bin/Release/netcoreapp3.1; LD_LIBRARY_PATH="../../../fnalibs/lib64" DYLD_LIBRARY_PATH="../../../../fnalibs/osx" dotnet ./isometric-park-fna.dll
+	cd isometric-park-fna/bin/Release/netcoreapp3.1; LD_LIBRARY_PATH="../../../../fnalibs/lib64" DYLD_LIBRARY_PATH="../../../../fnalibs/osx" dotnet ./isometric-park-fna.dll
+
+
+run-core-release-xvfb: 
+	cd isometric-park-fna/bin/Release/netcoreapp3.1; LD_LIBRARY_PATH="../../../../fnalibs/lib64" DYLD_LIBRARY_PATH="../../../../fnalibs/osx" xvfb-run -a -s "-screen 0 1400x900x24 +extension RANDR  +extension GLX +extension RENDER" --  dotnet ./isometric-park-fna.dll
 
 
 run-framework-release: