« Reply #3 on: April 09, 2015, 12:56:22 AM »
Make a copy of your MoF game directory so that you don't break your savefile by accident.
In the copied MoF directory, make a backup of th10.dat, rename th10boss.dat to th10.dat, then launch th10.exe. Enjoy!

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Playing Touhou since 18 March 2012. Playing video games since 19XX.
Normal 1CC: EoSD, PCB, IN, PoFV, MoF, SA, UFO, TD, DDC, HSiFS, CtC.
Extra 1CC: EoSD, PCB+Phantasm, IN, PoFV (K&S), MoF, SA, TD, HSiFS, CtC+Phantasm.
Hard 1CC: EoSD, PCB, IN, MoF, TD, CtC.
Lunatic 1CC: EoSD