An attempt creating a Gridrunner (by Llamasoft) clone in Prog8 for the C64.
To compile/test download/install Prog8, see
Then compile using
%JAVA_PATH% -jar prog8compiler-8.0-all.jar -srcdirs c64 -target c64 gridcommander.p8
%VICE_PATH%\x64sc.exe gridcommander.prg